• 대한수의학회지
• /
• 제37권3호
• /
• pp.525-532
• /
• 1997

The hoof parameters - hoof angle, toe length, heel length, hoof width, hoof length, heel width, hoof circumference - of 1372 Thoroughbred racehorses in Seoul racecourse were measured. Each parameter was compared with the racing time. The parameters were as follows: fore hoof angle $50.1{\pm}0.09^{\circ}$, hind hoof angle $50.1{\pm}0.08^{\circ}$; fore toe fength $82.8{\pm}0.21mm$, hind toe length $88.8{\pm}0.23mm$; fore heel length $28.6{\pm}0.19mm$, hind heel length $24.5{\pm}0.19mm$; fore hoof width $130.9{\pm}0.30mm$, hind hoof width $125.7{\pm}0.28mm$; fore hoof length $133.3{\pm}0.22mm$, hind hoof length $28.1{\pm}0.22mm$; fore heel width $61.2{\pm}0.32mm$, hind heel width $67.9{\p}0.35mm$; fore hoof circumference $264.2{\pm}0.48mm$, hind hoof circumference $253.8{\pm}0.40mm$. Apart from the hoof angle, the hoof parameters increased in proportion to the body weight. The parameters of forelimbs affected the racing time more than those of hindlimbs. The correlation between hoof parameters and racing time was shown more in short-distance race (1000M) than in long-distance race(2200M). The parameters that had correlation with racing time were hoof width, hoof length, heel width of forelimbs and heel width of hindlimbs.

• 한국사회복지학
• /
• 제67권1호
• /
• pp.143-163
• /
• 2015

자활사업 참여자의 음주문제는 지역자활센터에서 근무하는 실무자들 사이에서 공유되고 있는 이슈임에도 불구하고 사회복지연구에서 큰 주목을 받지 못하였다. 본 연구의 목적은 자활사업 참여자를 대상으로 음주문제와 자활의지의 관계를 탐색하는 것이다. 경기도에 거주하는 281명의 자활사업 참여자가 본 연구에 참여하였다. 음주문제와 자활(참여기간, 자활의지)의 관계를 분석한 이변량 분석에서는 통계적으로 유의미한 결과가 나타나지 않았으나, 자활사업 참여기간과 자활의지의 관계는 음주문제 유무에 따라 다르게 나타났다. 음주문제가 없는 자활사업 참여자들 사이에서 참여기간과 자활의지는 음(-)의 관계를 보인 반면, 음주문제가 있는 자활사업 참여자들 사이에서 두 변수는 양(+)의 관계를 보였고 그 관계는 유의미하였다. 즉 음주문제가 있는 자활사업 참여자들은 자활사업 참여기간이 길어질수록 자활 의지가 다소 강해지는 긍정적인 결과를 낳았다. 음주문제에 따른 자활사업 참여기간과 자활의지에 대한 분석결과는 기존 연구와 다른 새로운 결과라고 볼 수 있다.

• Imaging Science in Dentistry
• /
• 제33권3호
• /
• pp.137-141
• /
• 2003

Purpose: To evaluate the precision of measurements taken of dental implants in bucco-lingually sectioned views of the maxilla by linear tomograms of the panorama and to assess the visibility of the inferior wall of the maxillary sinus. Materials and Methods : Eighty sites prepared with implants of gutta percha cone in the sockets of the upper premolars and molars of 10 dry skulls were radiographically examined using linear tomograms of panorama, and scanned coronally and axially by computed tomography. The differences in mm between the measurements in bucco-lingually sectioned images of maxillary alveolar bone and the true length and width of the implanted gutta percha cones were compared as mean values (mean) and standard deviations (SD) for each radiographic technique. Linear tomography of panorama was compared with computed tomography for visualization of the relationship between the inferior wall of maxillary sinus and the end of each implant. Results: The deviations between the actual implant length and the measured values taken from the linear tomograms (0.44±0.39 mm) was significantly less than the measured values from the multiplanar reconstructed images of the axially scanned computed tomogram (1.21 ± 0.90 mm). There was statistically significant difference (p < 0.05) between two techniques in the differences between the measurements and true implant length. The relationship of the inferior border of maxillary sinus with end of implant was worse identified with the linear tomogram of panorama (68%) than the multiplanar reconstructed image of axially scanned computed tomogram (99%). Conclusion: We could not find any differences in the accuracy of length measurement between the linear tomogram of panorama and computed tomogram, but computed tomogram allowed for a better visualization of the inferior wall of the maxillary sinus than the linear tomogram.

• 한국작물학회지
• /
• 제29권2호
• /
• pp.175-178
• /
• 1984

보리 8개 품종에 대하여 최상부절간, 지엽, 지엽초 및 수장, 주당수수, 수당입수 등을 조사하여 품종간 차이를 검토하였고, 또 유전력을 추정했으며 이들 형질간의 상관관계를 조사하여 얻은 결과를 요약하면 다음과 같다. 1. 최상부절간의 길이는 31.23cm로부터 46.79cm로 품종간 차이가 현저했으며 굵기도 최소 3.81mm로부터 최대 5.19mm까지 그 차이가 컸다. 2. 지엽초장, 지엽장 및 폭도 최상부절간과 같은 경향을 보여 품종간 차이가 뚜렷하였다. 조사한 수량형질들도 품종간에 현저한 차이를 보였다. 3. 최상부절간의 길이에 대한 광의의 유전력은 0.9638로서 대단히 높았으며 굵기에 대한 유전력은 0.5652로서 낮았으며 지엽초장, 지엽장 및 폭에 대한 유전력도 각각 0.8143, 0.7927, 0.8980으로서 비교적 높은 편이었다. 4. 최상부절간의 길이는 굵기와 높은 정의 상관을 보였으며, 간장, 지엽초장, 지엽장과도 상당히 높은 상관을 보였다. 그것은 또 수당입수 및 주당수수와도 상관이 있었다. 최상부절간의 굵기는 간장, 지엽초장, 지엽장, 주당수수 및 수당입수와 상관이 있었다. 5. 지엽초장은 지엽장, 수장, 수당입수 등과 정의 상관이 있었다. 지엽장은 주당수수 및 수당입수와 상관이 있었고 지엽폭은 수량형질들과 상관이 없었으며 수장과 부의 상관을 보였다.

• Asian-Australasian Journal of Animal Sciences
• /
• 제21권5호
• /
• pp.633-639
• /
• 2008

The genetic relationship of gestation length (GL) with birth and weaning weight (BW, WW) was investigated using data collected from the Hanwoo Experiment Station, National Institute of Animal Science, RDA, Republic of Korea. Analytical mixed models including birth year‐season, sex of calf, linear and quadratic covariates of age of dam (days) and linear covariate of age at weaning (days) as fixed effects were used. Corresponding restricted maximum likelihood (REML) and Bayesian estimates of variance components and heritability were obtained with two models; Model 1 included only direct genetic effect and Model 2 included direct genetic, maternal genetic and permanent environmental effect. All the genetic parameter estimates from REML were corresponding to the Bayesian estimates. Direct heritability estimates for GL, BW, and WW were 0.48, 0.33 and 0.25 by Model 1. From Model 2, direct and maternal heritability estimates were 0.38 and 0.03 for GL, 0.14 and 0.05 for BW, and 0.08 and 0.05 for WW. Genetic correlation estimates between direct and maternal effects were 0.05 for GL, 0.59 for BW, and 0.52 for WW. Estimates of direct genetic correlation between GL and BW (WW) were 0.44 (0.21). Positive genetic correlation of GL with BW and WW imply that selection for greater BW or WW would lead to prolonged gestation length.

• 대한물리의학회지
• /
• 제18권2호
• /
• pp.49-59
• /
• 2023

PURPOSE: This study examined the relationship between lumbar instability and shortening of the iliopsoas muscles in patients with chronic low back pain. METHODS: Forty-nine patients with chronic low back pain participated in this study. The modified Thomas test was used to examine the shortening state of the iliopsoas muscle. The length of the iliopsoas muscle was measured using the hip flexion angle, and those with a flexion angle of 10° or more were classified as positive. Five subtests were used for the lumbar instability test: testing for prone lumbar instability, passive lumbar extension, anterior-posterior mobility, passive straight leg raise, and age. Those who tested positive for at least three of these tests were classified as positive for the lumbar segment instability test. RESULTS: There was a significant association between the results of the lumbar instability test and the shortening of the iliopsoas test (p < .05). After analyzing the association between the iliopsoas length test and the five lumbar instability subtests, the results of the prone lumbar instability test (p < .001) and the anterior-posterior mobility test (p < .05) showed a significant association with the iliopsoas length test. CONCLUSION: The association between lumbar instability and shortening of the iliopsoas muscles was examined in 49 patients with chronic low back pain. Patients with shortened iliopsoas muscles tested positive in the lumbar instability tests more often. Hence, the length test of the iliopsoas muscle can be used to determine lumbar instability in patients with chronic low back pain.

• 한국패류학회지
• /
• 제10권1호
• /
• pp.38-48
• /
• 1994

Gonadal developmint, age and growth of Ruditapes philippinarum were investigated using samples from the intertidal zone of Simpo on the coast of Kimje, Korea, which were collected onthly for one year from Februaty 1993 to January 1994.Ruditapes philippinarum is diecious in sex. The gonads are located between the subregion of the midintestinal glands and reticular connective tissue of the foot. The ovary is composed of a number of ovarian sacs, and the testis is composed of numerous seminiferous tubules. The clam spawns once a year from early June to darly October, and the main spawning occurred between July and August when the water temperature went above 23$^{\circ}C$. Ripe oocytes are about 65-70${\mu}{\textrm}{m}$ in diameter. Gonadal phases of this species can be divided into five successive stages; multiplicative(February to March), growing (April to May), mature(Aprilto Septimber), spent(June to October), and degenerative and resting(july to March). Spawning is closely related to the sea water temperature. Based on the monthly variations of marginal index (MI')of the shell, it was suggested that the annual ring mark formation occurred in March once a year and took approximately 8 months (0.67 year) for first ring to be formed on the shell. The relationship between the shell length(SL) and the total weight (TW) was represented by nonlinear equation; TW=1.208 x 10/ sup -4/ S $L^{3.158}$, and also in the relationship be-tweenthe shell length (SL) and the shell height(SH), the shell length and the shell width (SW) were represented by the linear equations; SH=0.726 SL-0.483, SW=0.542 SL-0.803.Growth curves for shell length and total weight fitted to von Bertalanffs equation were expressed as: S $L_{t}$ =68.34(1- $e^{0.221}$(t+0.418)) T $W_{t}$ =75.16(1- $e^{0.221}$(t=0.418))$^{3.158/3.158}$

• 대한가정학회지
• /
• 제26권3호
• /
• pp.135-152
• /
• 1988

The purpose of this study was to survey the improvement activities for the apartment house ; and to examine the relationship between apartment residents and their housing improvement activities in order to present some informations for the further studies and plans of apartment design and housing policy. Library and questionnaire survey methods were used in this research. the sample was taken from 102 housewives living in the apartments over 45 pyong (1602 sq. ft.), in Seoul, Data were analyzed with the SPSS using frequency, percentage, chi-square test, F-test, Duncan's multiple range test, η2, and C2. The results were as follows: 1. It was found that residents had experienced with 3.6 kinds of housing improvement activities. Living rooms, dining rooms, and kitchens in family living areas ; balconies and utility rooms in utility areas were improved for the physical convenience and quality of living. 2. This survey indicated that apartment residents evaluated thier housing condition as high, except storage spaces and outdoor noises. 3. About 80% of respondents were expected to live continuously in the current apartments because they were satisfied with the size of thier residences, However, they wanted to improve the inside of the entire apartment, especially bathrooms. 4. Variables which had a significant relationship in housing improvement activities in the past were the length of residence, the expected length of residence, and the characteristic of residence. 5. The expected length of residence, and the characteristic of residence were found to be effective variable for evaluating the current residence. 6. Finally, the expected length of residence, and the characteristic of residence were significant variables of the housing plan in the future. Housing improvement activities were prevalent recently and expected to be continued in the future. It can be said, therefore, that apartment residents have a long -term plan to live in one place rather than moving out ever two-three years.

• 한국대기환경학회지
• /
• 제16권3호
• /
• pp.237-246
• /
• 2000

An experimental study has been carried out using a rotating water channel in order to investigate the effect of surface roughness on the vertical dispersion of plume within boundary layer. Dispersion measurements of tracers released from two sources with different height at neutral conditions over various rough terrain ranging from rural to urban have been performed. Various values of roughness length were simulated by combining of 4 stream velocities and 3 roughness element conditions. Dispersion measurements have also been made for rough terrain where high buildings are locally concentrated. Values of $\sigma$z increase with roughness and this tendency appears to apply both cases of with and without locally concentrated high buildings. The comparisons of the Bowne's nomogram on $\sigma$2 vs x relationship and the measurements of $\sigma$2 with roughness show good accordance in $\sigma$2 distribution at stability D class over rural, suburban and urban terrain. For constant roughness length the $\sigma$2 values of plumes from lower source height are smaller than those of plumes from higher source at short downwind distance, but this relationship becomes reverse as distance increases. Crossing appears to be made before about 2km. The value of constant I in McMullen's equation $\sigma$2=exp [I+J(In x) + K(In x)2] appears to increase with roughness length, however, the relationships between other constants and roughness have been confirmed. The values of $\sigma$2 for various downwind distances, estimated by using an equation which is employed in ISC (Industrial Source Complex) dispersion model for areas where high buildings are locally assembled, are in accordance with measurements from water channel experiments.

• The Journal of Advanced Prosthodontics
• /
• 제3권4호
• /
• pp.204-215
• /
• 2011

PURPOSE. The aim of this retrospective study is to analyze the relationship between local factors and survival rate of dental implant which had been installed and restored in Seoul Veterans Hospital dental center for past 10 years. And when the relationship is found out, it could be helpful to predict the prognosis of dental implants. MATERIALS AND METHODS. A retrospective study of patients receiving root-shaped screw-type dental implants placed from January 2000 to December 2009 was conducted. 6385 implants were placed in 3755 patients. The following data were collected from the dental records and radiographs: patient's age, gender, implant type and surface, length, diameter, location of implant placement, bone quality, prosthesis type. The correlations between these data and survival rate were analyzed. Statistical analysis was performed with the use of Kaplan-Meier analysis, Chi-square test and odds ratio. RESULTS. In all, 6385 implants were placed in 3755 patients (3120 male, 635 female; mean age $65{\pm}10.58$ years). 108 implants failed and the cumulative survival rate was 96.33%. There were significant differences in age, implant type and surface, length, location and prosthesis type (P<.05). No significant differences were found in relation to the following factors: gender, diameter and bone quality (P>.05). CONCLUSION. Related factors such as age, implant type, length, location and prosthesis type had a significant effect on the implant survival.