• 한국수산과학회지
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• 제30권5호
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• pp.903-905
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• 1997

Morphological differences were studied using the analysis of covariance between various partial length and mantle length of the common Todarodes pacificus by cohorts in the Korean waters. Analysis of seven morphological characters proved that each cohort has no sexual differences, except significant sexual differences only in the Summer cohort in term of relative growth between mantle length and body weight. The three cohorts represent significant differences in morphological characters.

• 한국동물학회지
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• 제32권1호
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• pp.14-21
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• 1989

한국산 포유동물 6목 24종 279표본의 4개 외부형질과 22개 두골형질들을 측정하였으며, 측정치를 ordination법과 clustering법에 의해서 분석하였다. 형태적 분석의 결과는 족제비, 청서 및 토마스 땃쥐가 현존 분류체계상의 위치와 다르게 나타났다. 한국산 포유동물의 목 수준에서의 mrophological difference는 다른 포유동물보다는 크게 나타났으나, 목 이하의 수준에서는 별 차이가 없었다. 분류학적 체계에서의 단계가 높아질 수록 average taxonomic distance morphological difference의 수치는 커졌으며, 두 행렬식간의 상관계수는 0.59였다.

• 한국패류학회지
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• 제22권1호
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• pp.23-26
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• 2006

Morphological differences were studied using the analysis of variance between various partial length and shell length of three populations of Saxidomus purpuratus on the Korean waters. The Relative growth equations, that is, SH-SL, SW-SL, TW-SL of S. purpuratus by sex were estimated. The analysis of variance of four morphological characters proved that each population has no sexual differences (p>0.01). But the three populations are significantly different in morphological characters (p<0.01).

• Clinical and Experimental Reproductive Medicine
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• 제27권2호
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• pp.191-200
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• 2000

Objective: This study was carried out to compare the effects of the stepwise exposure treatments on the morphological normality, fertilization and blastocyst formation rate of the frozen-thawed mouse mature oocytes by vitrification or ultra-rapid freezing and to use as a fundamental data for the cryopreservation of human oocytes. Materials and Methods: The morphological normality and fertilization rates of the vitrified and ultra-rapid frozen mouse mature oocytes after three-stepwise exposure treatments (1step, 3step and 5step) were observed. After choosing the 3step exposure treatment groups, we observed the morphological normality and fertilization, blastocyst formation rate of the vitrified and ultra-rapid frozen mouse mature oocytes. Results: The morphological normality and fertilization rates of the vitrified mouse mature oocytes after three-stepwise exposure treatments (1step, 3step and 5step) were 75%, 85%, 88% and 58%, 61 %, 54% respectively. There were no significant differences among treatments(p>0.05). The morphological normality and fertilization rate of the control was 92% and 65%. There were no significant differences in fertilization rate among control and treatments (p>0.05). The morphological normality and fertilization rates of the ultra-rapid frozen mouse mature oocytes after three-stepwise exposure treatments (1step, 3step and 5step) were 83%, 83%, 84% and 75%, 63%, 56% respectively. There were no significant differences among treatments (p>0.05). The morphological normality and fertilization rate of the control was 95% and 67%. There were no significant differences among control and treatments (p>0.05). The morphological normality and fertilization rate of the vitrified or ultra-rapid frozen mouse mature oocytes after 3step exposure treatment were 69% and 75%, respectively. The blastocyst formation rate was 60% and 57%. The results did not differ significantly between vitrification and ultra-rapid freezing (p>0.05). Conclusion: As known in the above results, there were no significant differences in the fertilization and blastocyst formation rate of the frozen-thawed mouse mature oocytes by vitrification or ultra-rapid freezing among the control and treatments. It is suggested that vitrification and ultra-rapid freezing method were effective for the cryopreservation of mouse mature oocytes.

• 디지털융복합연구
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• 제15권6호
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• pp.155-164
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• 2017

본 연구는 페이스북과 인스타그램의 형태적 차이에 따른 이용동기 및 사용행태의 공통점과 차이점을 분석하는데 그 목적이 있다. 직관적 이미지, 제한된 네트워크 등 3세대 SNS의 형태적 차별화는 SNS 연구에 있어 개별 서비스 이용자를 동질적 집단이 아닌 차별적 집단으로 인식해야 할 필요성을 제기한다. 따라서, 본 연구는 SNS 주이용 집단인 대학생 255명을 대상으로, 페이스북과 인스타그램에 대한 이용동기 및 이용동기에 따른 사용행태의 차이를 요인분석과 회귀분석을 통해 분석하였다. 연구결과, SNS 이용동기로 총 7개 요인이 도출되었으며, 페이스북과 인스타그램의 이용동기 및 이용 동기에 따른 사용행태(피드백 측면, 만족도 측면)의 차이가 밝혀졌다. 본 연구를 통해 향후 SNS의 형태적 진화에 따른 이용자의 태도변화를 예측하는데 기여함과 동시에, 형태적 속성을 기반으로 한 GUI 설계, 기업홍보 마케팅 등 관련 융복합연구로의 확대 적용을 기대한다.

• 원예과학기술지
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• 제35권4호
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• pp.510-522
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• 2017

To better understand the morphological variation for Perilla crop in different areas of China, we studied the morphological variation in 87 accessions (84 cultivated var. frutescens and three cultivated var. crispa) from high latitude (Northeast China) and middle latitude (North and Northwest China) areas of China by examining seven quantitative and 10 qualitative characters. Analysis of the morphological variation determined that there was significant morphological differences in five quantitative traits between cultivated var. frutescens and cultivated var. crispa, including effective number of branches (QN2), number of internodes (QN3), number of branches (QN4), length of the largest inflorescence (QN5), and days from germination to flowering (QN7). However, two quantitative traits-plant height and number of florets of the largest inflorescence-did not show any significant differences between cultivated var. frutescens and cultivated var. crispa. In addition, significant differences for six quantitative traits were found between the accessions of cultivated var. frutescens originating from high and middle latitude areas in China, which included QN2, QN3, QN5, number of florets of the largest inflorescence (QN6), and QN7. Principal components analysis (PCA) identified five quantitative characters [plant height (QN1), QN2, QN3, QN4, QN7] and six qualitative characters [fragrance of plant (QL1), color of reverse side of leaf (QL3), degree of pubescence (QL5), color of flower (QL6), shape of leaf (QL7), and hardness of seed (QL10)] that contributed to the positive direction on the first axis. The other quantitative and qualitative characters contributed to the negative direction on the first axis. Most accessions of cultivated var. frutescens and cultivated var. crispa were clearly separated by the first axis. In addition, most accessions of cultivated var. frutescens are from high latitude and middle latitude areas that were clearly separated by the first axis, except for several accessions. The findings from this study will provide useful information towards understanding the morphological variation of Perilla crop according to geographical distribution in high and middle latitude regions of China.

• 인지과학
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• 제27권2호
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• pp.303-323
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• 2016

본 연구는 형태소 인식력에 따른 단어 학습 수행의 차이를 조사하였다. 참가자들을 형태소 인식력이 높은 집단과 낮은 집단으로 나누고, 문장 맥락 속에 제시된 새로운 단어의 의미를 추론하여 학습하도록 하였다. 단어는 형태소 분석이 가능한 문장 맥락 또는 불가능한 문장 맥락 속에 제시되었다. 실험 결과, 형태소 인식력이 높은 참가자들은 형태소 인식력이 낮은 참가자들에 비해 새로운 단어의 의미를 더 정확하게 추론하였고, 일주일 후에도 이러한 차이가 유지되었다. 의미 학습의 집단 간 차이는 형태소 분석이 가능한 문장 맥락 조건에서 크게 나타났으며, 형태소 분석이 불가능한 문장 맥락 조건에서는 차이가 아주 작았다. 본 연구의 결과는 새로운 한자어의 의미 학습에 형태소 분석이 관여하며, 형태소 인식력이 형태소 분석 과정에 영향을 미친다는 증거를 제공한다.

• 한국응용곤충학회지
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• 제29권1호
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• pp.25-30
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• 1990

同-種에서 地理的 隔離에 따른 生理, 形態學的 差異를 알아보기 위하여 全羅南道 海南과 江原道 春域地域의 솔잎혹파리 幼蟲과 成蟲을 재료로 하여 전기영동법, 그리고 走査電子顯徵鏡을 이용하여 比較하였다. 두지역의 3齡 幼蟲에서는 일반 蛋白質의 밴드패턴은 동일하였다. 그러나 同位 酸素 esterase와 MDH는 명확한 차이를 보여주었다. 成蟲에서는 -般環白質과 esterase 밴드패턴에서 부분적으로 명확한 差異를 보여주었다. 두지역 성충 생식절의 外部微細構造를 검토한 결과 産卵管의 들째마디에서 뚜렷한 차이가 관찰되었다.

• 생명과학회지
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• 제19권10호
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• pp.1382-1388
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• 2009

Rubus crataegifolius is a shrub species and is primarily distributed throughout Asia and Europe. We collected 550 representative samples of the eleven populations in Korea to estimate leaf variation within species. The 35 morphological characteristics allowed us to resolve well-supported fixed characteristics and variable characteristics. Sixteen of twenty-three quantitative characteristics and five of twelve qualitative characteristics showed significant differences among populations. We argued that the population differentiation can accounted for the variation in phenetic characteristics such as spine in this species, but were less successful in accounting for variation in other traits. Within a polystatistic leaf structure, their morphological differences could be modulated by ecological pressure such as temperature, altitude, duration of sunshine, and solar radiation. The phenogram showed two distinct clades. One was a group in central Korea and the other was a group in the southern regions of Korea. If morphological characteristics in R. crataegifolius populations reflect their ecological niche, morphology should be regarded with caution as the main criterion for population studies in R. crataegifolius.

• 구강회복응용과학지
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• 제17권4호
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• pp.225-230
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• 2001

Morphological characteristics of the asymmetric mandible in 135 adult male patients were investigated. Panoramic X-ray images were recorded. Age, ramus height, antegonial notch height, condylar height, coronoid process height, ramus body height and condylar neck angle were calculated and measured. Statistical analysis of unpaired two-tailed t-test and correlation coefficients was performed to find the morphologic differences between short ramus height side and the other. Condylar height and ramus body height in short ramus height side were smaller than those of the other side. Antegonial notch height, coronoid process height, condylar neck angle showed no differences. Condylar neck height was correlated with condylar neck angle.