• 한국철도학회논문집
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• 제10권6호
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• pp.772-778
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• 2007

곡선통과 새마을호 열차의 마모 특성을 평가하기 위하여 다량 편성 해석모델이 사용된다. 이 모델과 ADAMS/Rail를 사용하여 마모 특성과 관련된 변수의 변화에 따른 민감도 해석이 수행된다. 저속에서 우측 차륜의 마모도와 미끄럼도가 좌측 차륜보다 높으나, 고속의 경우는 좌측 차륜이 우측 차륜보다 높다. 곡선반경의 감소에 따라 마모도와 미끄럼도가 증가한다. 완화곡선의 길이가 증가하련 마모도와 미끄럼도가 증가한다. 또한 캔트가 증가하면 마모도와 미끄럼도가 증가한다.

• 한국심리학회지 : 문화 및 사회문제
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• 제17권2호
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• pp.219-239
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• 2011

본 연구에서 다문화 가정에 있어서 남편의 성역할 고정관념, 다문화 감수성, 그리고 아내문화수용이 결혼이주여성의 문화적응과 결혼 및 삶의 만족에 대해 미치는 영향을 검토하고자 하였다. 본 연구의 대상은 대구경북지역의 다문화가정의 부부 100쌍이었으며 남편 평균 연령은 41.6세, 아내 평균 연령은 29.6세이었다. 결혼이주여성의 국적은 주로 베트남과 중국이었다. 주요 결과를 보면, 첫째, 남편의 성역할 고정관념, 다문화 감수성, 아내문화수용의 세 변인은 아내의 문화적응의 네 하위 요인(통합, 동화, 분리, 주변화) 중 주변화에 대해서만 유의하게 설명하였다. 둘째, 남편의 이들 세 변인 중 아내문화수용만 아내의 결혼만족과 삶의 만족을 각각 유의하게 설명하였다. 셋째, 아내 문화적응의 네 하위유형 중 주변화는 아내의 결혼 및 삶의 만족을 유의하게 설명하였고, 통합은 삶의 만족만 유의하게 설명하였다. 남편의 성역할고정관념은 아내문화수용 및 다문화감수성과 부적 상관을 보였다. 아내의 문화적응 중 동화는 통합과 약한 정적 상관, 주변화와는 중간정도의 부적 상관을 보였다. 본 연구의 의의는 결혼이주여성의 결혼 만족 및 삶의 만족은 남편의 이문화 이해를 비롯한 남편관련 변인에 의한 문화적응의 영향을 받는다는 것을 밝힘으로써 개인의 문제가 아닌 다문화적 관점에서 접근해야 할 문제임을 인식시켜주었다는 점이다.

• 한국동물위생학회지
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• 제14권2호
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• pp.159-174
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• 1991

A field trial of norfloxacin on bovine 206, swine 222 and poultry 205 with respiratory diseases and diarrhea was conducted from Sept 1, 1990 to Jan 30, 1991 in Inchon and Kyonggi-do. The results are as follows. 1. Guinea pigs and rabbits were dosages 10 and 20 times normal. Ten days of observation saw no side effect. 2. Oral treatment on bovine, swine and poultry showed a curing rate of 82.00∼89.06%(Mean 86.00%), compared with 87.27∼96.36%(Mean 92.24%) by Injection. 3. The curing rate was 81.92% by the fourth treatment. 4. The curing rate with and without the use of adjuvant was 80.00∼100% and 83.60∼93. 10%, respectively, for swine, and 81.82∼100% and 82.00∼97.14% for bovine. 5. The curing rate was more dependent on seriousness of illness, environment and time than age. 6. The main disease causing bacteria of bovine respiratory diseases： Haemolytic Sta 27.62%, Haemolytic Str 33.33%, sum of this bacteria is 60.95%, diarrhea: Haemolytic coliform 80.20%, swine respiratory diseases； Haemophilus Spp 20.95%, Haemolytic Sta 72%, Haemolytic Str 21.90%, Sum of these bacteria is 68.57％, diarrhea; Haemolytic coliform 57.26%, poultry respiratory diseases； mycoplasma Spp 29.52%, Haemolytic Sta 13.33％, Sum of this bacteria is 42.85%, diarrhea； Haemolytic coliform 53.00%. 7. The curing rate of norfloxacin by species of strain, the unidentified bacteria on bovine respiratory diseases was the lowest with 77.78％, the others ranged from 84.21％ to 100％ with most of them over 90%. 8. The loss of clinical sign on bovine and swine was the highest when after 2∼4 application. 9. In terms of antibiotic sensitivity test, norfloxacin was the highest with 84.62∼100％ (mean 90.09％) among eight bacterias, only 5 of 15 antibiotics had a sensitivity of over 56.25%, showing a high degree of tolerance.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제19권4호
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• pp.251-258
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• 2016

Purpose: This study aimed to evaluate the utility of acanthosis nigricans (AN) severity as an index for predicting insulin resistance in obese children. Methods: The subjects comprised 74 obese pediatric patients who attended the Department of Pediatrics at Chosun University Hospital between January 2013 and March 2016. Waist circumference; body mass index; blood pressure; fasting glucose and fasting insulin levels; lipid profile; aspartate transaminase, alanine transaminase, glycated hemoglobin, C-peptide, and uric acid levels; and homeostatic model assessment insulin resistance (HOMA-IR) and quantitative insulin check sensitivity index (QUICKI) scores were compared between subjects with AN and those without AN. Receiver operating characteristic curves were used to investigate the utility of the AN score in predicting insulin resistance. HOMA-IR and QUICKI were compared according to AN severity. Results: The With AN group had higher fasting insulin levels ($24.1{\pm}21.0\;mU/L$ vs. $9.8{\pm}3.6\;mU/L$, p<0.001) and HOMA-IR score ($5.74{\pm}4.71$ vs. $2.14{\pm}0.86$, p<0.001) than the Without AN group. The AN score used to predict insulin resistance was 3 points or more (sensitivity 56.8%, specificity 83.9%). HOMA-IR scores increased with AN severity, from the Without AN group (mean, 2.15; 95% confidence interval [CI], 1.72-2.57) to the Mild AN (mean, 4.15; 95% CI, 3.04-5.25) and Severe AN groups (mean, 7.22; 95% CI, 5.08-9.35; p<0.001). Conclusion: Insulin resistance worsens with increasing AN severity, and patients with Severe AN (AN score ${\geq}3$) are at increased risk of insulin resistance.

• The Korean Journal of Pain
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• 제14권2호
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• pp.186-192
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• 2001

Background: Epidural test doses containing epinephrine are an incomplete marker for the detection of inadvertent intravascular injection. Therefore, many investigators have attempted to find a more reliable marker as an alternative to epinephrine in adult patients anesthetized with enflurane. The present study was designed to test whether two different simulated intravenous test doses of isoproterenol could be used as a reliable marker for the detection of inadvertent intravascular injection in adult patients anesthetized with $O_2-N_2O$-enflurane. Methods: Forty healthy adult patients were anesthetized with 1% end-tidal enflurane and nitrous oxide after endotracheal intubation and were randomized to one of two groups according to the dose of isoproterenol. Group 1 and 2 (n = 20 each) received 3 ml of 1.5% lidocaine with 3 and 5 g isoproterenol intravenously, respectively, to simulate an intravascularly administered test dose. Heart rate (HR) and systolic blood pressure (SBP) were measured at 20-second intervals for 4 min after injection. Results: Mean maximal HR increases were $24{\pm}17$, $35{\pm}11$ bpm (P < 0.05), mean maximal SBP increases were $14{\pm}8$, $13{\pm}9$ mmHg and mean maximal SBP decreases $20{\pm}11$, $22{\pm}9$ mmHg following the IV injection of 3, $5{\mu}g$ isoproterenol, respectively. The incidence of hypotension was similar in both groups. Isoproterenol 3 and $5{\mu}g$ produced 75%, 100% sensitivity in the HR criteria ($\geq$ 20 bpm increase) and 60%, 70% sensitivity in the SBP criteria ($\geq$ 15 mmHg), respectively. Conclusions: These results indicate that based on the HR response, the epidural test dose containing $5{\mu}g$ isoproterenol to simulate an intravascular administration is a more reliable marker than $3{\mu}g$ isoproterenol in adult healthy patients during enflurane anesthesia.

• Annals of Clinical Neurophysiology
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• 제19권1호
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• pp.13-19
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• 2017

Background: Median F-wave latencies are physiologically shorter than ulnar latencies, but they are often longer relative to ulnar latencies in carpal tunnel syndrome (CTS). This study aimed to investigate the value of absolute F-waves and relative latency changes compared to ulnar latencies in the diagnosis of CTS. Methods: F-wave latencies of median and ulnar nerves in 339 hands from 339 patients with CTS and 60 hands from 60 control subjects were investigated. Mean F-wave minimal latencies of median and ulnar nerves were compared between groups. Patients were further divided into subgroups based on Canterbury grading and then analyzed using F-wave latency differences (FWLD) and F-wave ratio (FWR). Results: Of 339 hands in the CTS group, 236 hands exhibited F-wave inversion based on the FWLD criterion and 277 hands had F-wave inversion based on the FWR criterion. F-wave inversion had a sensitivity of 81.7% using the FWR criterion to diagnose CTS. The mean FWLD and FWR were significantly greater in all patient subgroups compared to the control group (p < 0.001). In addition, mean FWLD and FWR showed significant correlations (r = -0.683 and r = 0.674, respectively, p < 0.001) with disease severity. Conclusions: F-wave studies are effective supplementary diagnostic tools comparing to other standard electrophysiologic criteria for screening patients with CTS.

• 대한간호학회지
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• 제7권1호
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• pp.73-79
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• 1977

This study was carried on between June first and July thirty-first 1976 using as subjects women living in the areas of Pusan, Kyoung Sang Buk Do and Kyoung Sang Nam Do. The subjects were divided into 3 groups according to different environments and styles of life, namely married life, widowhood and religious life and according to ages ranging between 45 and 55. Each of these 3 groups of women of .menopausal age consisted of 50 persons and totalling a group of 150. The subjects were chosen according to random sampling and the Cornell Medical Index was applied to discover physical and mental health status with the following results : 1. The total mean scores for complaints in the group of widows was 46.00, in the group of Married women was 37.10 and in the Sisters was 34.30 showing highest scores for the widows and lowest for the Sisters. 2. The mean score percentages for physical and mental complaints 28.80 and 16.50 respectively for the Widows:27.00 and 10.80 for the Married and 24.30 and 10.20 for the Sisters. 3. The highest number of mean scores for physical items was for digestive system complaints which showed a score of 5.04, 4.78 and 4.90 respectively for Widows, Married women and Sisters among the psychic status items all 3 groups showed highest scores for complaints of inadequacy: 5.52, 3.40 and 3.64 respectively. 4. In comparing the 2 groups of Married women and Widows, the highest significant differences appeared in the items of depression and sensitivity but there was also some significant difference in the items of inadequacy, anger, miscellaneous diseases and genito-urinary system complaints. 5. In comparing the Married women and Religious groups the highest significant differences according from the highest were as follows : cardiovascular system, sensitivity, tension, nervous system, frequent illnesses and anxiety.

• Journal of Preventive Medicine and Public Health
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• 제19권2호
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• pp.233-243
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• 1986

Our study was designed to identify the difference in the mental health status among hospitalized patients due to occupational diseases and accidents and pre-employment physical examinees, and to identify the relationship between mental health status and socio-demographic variables, and to provide information useful to non-psychiatric clinicians in caring of such patients. Samples were comprised of 189 pneumoconiotic patients, 132 industrial accident-induced patients and 122 pre-employment physical examinees who were interviewed with 90-item symptom cheklist (SCL-90). The following results were obtained: 1) Mean scores of symptom dimension on socio-demographic subgroup showed higher tendencies in older aged, male, lower educated, miner, married, mining residence, and pneumoconiotic patients. 2) Mean scores of total samples on all symptom dimensions were as follows in the order of their magnitudes; Depression, Somatization, Obsessive-compulsive, Anxiety, Psychoticism, Interpersonal sensitivity, Phobic-anxiety, Hostility, and Paranoid ideation. 3) The highest mean scores on each socio-demographic subgroup were as follows; Depression in younger aged and Somatization in older aged; Depression in male Somatization in female; Somatization in lower educated and depression in higher educated; Somatization in miners and depression in non-miners; Somatization in married and Depression in unmarried; Depression in all kind of residences; Somatization in patients and Depression in pre-employment physical examinees(normal). 4) In consequence of stepwise multiple regression, the important socio-demographic variables were age, occupation, diagnostic classification, and residence. Age was the most imprtant variable in Somatization, Depression, Obsessive-compulsive, Anxiety, Phobic anxiety, Paranoid ideation, and Psychoticism. Occupation was the most important one in Interpersonal sensitivity and Hostility and also had significant realtionships with all symptom dimensions.

• Animal Bioscience
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• 제34권10호
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• pp.1623-1631
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• 2021

Objective: This study aimed to validate and evaluate the dry matter (DM) intake prediction model of the Korean feeding standards for dairy cattle (KFSD). Methods: The KFSD DM intake (DMI) model was developed using a database containing the data from the Journal of Dairy Science from 2006 to 2011 (1,065 observations 287 studies). The development (458 observations from 103 studies) and evaluation databases (168 observations from 74 studies) were constructed from the database. The body weight (kg; BW), metabolic BW (BW^0.75, MBW), 4% fat-corrected milk (FCM), forage as a percentage of dietary DM, and the dietary content of nutrients (% DM) were chosen as possible explanatory variables. A random coefficient model with the study as a random variable and a linear model without the random effect was used to select model variables and estimate parameters, respectively, during the model development. The best-fit equation was compared to published equations, and sensitivity analysis of the prediction equation was conducted. The KFSD model was also evaluated using in vivo feeding trial data. Results: The KFSD DMI equation is 4.103 (±2.994)+0.112 (±0.022)×MBW+0.284 (±0.020)×FCM-0.119 (±0.028)×neutral detergent fiber (NDF), explaining 47% of the variation in the evaluation dataset with no mean nor slope bias (p>0.05). The root mean square prediction error was 2.70 kg/d, best among the tested equations. The sensitivity analysis showed that the model is the most sensitive to FCM, followed by MBW and NDF. With the in vivo data, the KFSD equation showed slightly higher precision (R² = 0.39) than the NRC equation (R² = 0.37), with a mean bias of 1.19 kg and no slope bias (p>0.05). Conclusion: The KFSD DMI model is suitable for predicting the DMI of lactating dairy cows in practical situations in Korea.

• 한국연안방재학회지
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• 제6권3호
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• pp.111-120
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• 2019

In coastal morphological modelling, there are a number of input factors: wave height, water depth, sand particle size, bed friction coefficients, coastal structures and so forth. Measurements or estimates of these input data may include uncertainties due to errors by the measurement or hind-casting methods. Therefore, it is necessary to consider the uncertainty of each input data and the range of the uncertainty during the evaluation of numerical results. In this study, three uncertainty factors are considered with regard to the prediction of coastal erosion in Ilsan beach located in Ilsan-dong, Ulsan metropolitan city. Those are wave diffraction effect of XBeach model, wave input scenario and the specification of the coastal structure. For this purpose, the values of mean wave direction, significant wave height and the height of the submerged breakwater were adjusted respectively and the followed numerical results of morphological changes are analyzed. There were erosion dominant patterns as the wave direction is perpendicular to Ilsan beach, the higher significant wave height, and the lower height of the submerged breakwater. Furthermore, the rate of uncertainty impacts among mean wave direction, significant wave height and the height of the submerged breakwater are compared. In the study area, the uncertainty influence by the wave input scenario was the largest, followed by the height of the submerged breakwater and the mean wave direction.