현대건축의 표현에 있어서 ‘Lightness’에 관한 연구

이종협,배준현 동양대학교 2000 동양대학교 논문집 Vol.6 No.1

Transparent and glittering vocabulary created by the use of glass in modern architecture has become a major concept, called "lightness", used by many modern architects. Although the use of structure components and the transparent materials of contemporary architecture resembles that of Modernism, it shows distinct ideas and structural solutions. This study recognizes the lightness in architecture as a phenomenon an understands, following results from an analysis of philosophical, cultural, and architectural meanings and trends within the architectural realm that are advocated by such phenomenon, that the future trends of architecture will deal with mobility, fluidity, and the loss of historical identity that are uncontrollable by the certainty and fixed vision of Modern architecture.

Genetic distances of three Saxidomus purpuratus populations identified by PCR method

Jun-Hyub Jeon,Jong-Man Yoon 한국수산해양기술학회(구 한국어업기술학회) 2015 한국수산해양기술학회 학술발표대회 Vol.2015 No.10

Genetic Distances of Crucian Carp Populations analyzed by PCR Approach

Jun-Hyub Jeon,Jong-Man Yoon 한국발생생물학회 2016 발생과 생식 Vol.20 No.2

Genomic DNAs isolated from crucian carp of four rivers, belonging to the family Cyprinidae was amplified by seven oligonucleotides primers. In the present study, we employed hierarchical clustering method in order to reveal genetic distances and variations. Crucian carp was acquired from Hangang river (CAH), Geumgang river (CAG), Nakdonggang river (CAN) and Yeongsangang river (CAY). The primer BION-12 generated the most loci (a total of 50) with an average of 10 in the CAY population. The primer BION-10 generated the least loci (a total of 19), with an average of 3.8 in the CAG population, in comparison to the other primers used. Seven oligonucleotides primers made 16.7 average no. per primer of specific loci in the CAH population, 7.4 in the CAG population, 8.6 in the CAN population and 0.9 in the CAY population, respectively. The specific loci generated by oligonucleotides primers revealed inter-individual-specific characteristics, thus disclosing DNA polymorphisms. The dendrogram obtained by the seven oligonucleotides primers indicates four genetic clusters. The genetic distance that displayed significant molecular differences was between individuals no.06 and no.08 from the CAG population (genetic distance = 0.036), while the genetic distance among the five individuals that displayed significant molecular differences was between individuals no.08 and no.09 from the CAG population (genetic distance = 0.088). With regard to average bandsharing value (BS) results, individuals from CAY population (0.985±0.009) exhibited higher bandsharing values than did individuals from CAH population (0.779±0.049) (P<0.05). Relatively, individuals of CAY population were fairly closely related to that of CAN location (genetic distance between two populations<0.016).

Fatigue Test of MEMS Device: a Monolithic Inkjet Print

Jun-Hyub Park,Yong Soo Oh 대한기계학회 2004 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.18 No.5

A testing system was developed to improve the reliability of printhead and several printheads were tested. We developed a thermally driven monolithic inkjet printhead comprising dome-shaped ink chambers, thin film nozzle guides, and omega-shaped heaters integrated on the top surface of each chamber. To perform a fatigue test of an inkjet printhead, the testing system automatically detects a heating failure using a Wheatstone bridge circuit. Various models were designed and tested to develop a more reliable printhead. Two design parameters of the width of reinforcing layer and heater were investigated in the test. Specially, the reinforcing layer was introduced to improve the fatigue life of printhead. The life-span of heater with a reinforcing layer was longer than that without a reinforcing layer. The wider the heater was, the longer the life of printhead was. <br/>

Genetic distances of four crucian carp populations determined by PCR analysis

Jun-Hyub Jeon,Jong-Man Yoon 한국수산해양기술학회(구 한국어업기술학회) 2015 한국수산해양기술학회 학술발표대회 Vol.2015 No.10

Genetic distances and variations of geographic hairtail populations

Jun-Hyub Jeon,Jong-Man Yoon 한국발생생물학회 2014 한국발생생물학회 학술발표대회 Vol.2014 No.9

Hairtails (Trichiurus lepturus) are the most popular marine products in Korea because of their taste and nutritional value, and Koreans consume them in large quantities. Hairtail, ecologically important warm water fish species, belonging to family Trichiuridae, widely distributed on the coast of the West Sea, South Sea and Jeju Island in the Korean Peninsula and the several sea areas in China under the natural ecosystem. However, in spite of their economic and scientific consequences, a little information currently exist regarding the physiological and ecological levels only of hairtail species in Korea (Koo et al., 2004). Simply the biological fisheries feature, distribution and migration of hairtail (T. lepturus) in Korean waters were surveyed (Park et al., 2005). Currently, imported hairtail have been altered into endemic hairtail because of high edge. In the present study, to explicate the genetic distances and differences among geographical hairtail populations, we accomplished a clustering analysis of three hairtail populations collected from Atlantic, Korea and Chinese site. Muscle tissues were obtained separately from individuals from Atlantic hairtail population (AHP), Gunsan hairtail population (GHP) and Chinese hairtail population (CHP), respectively. The muscle was collected in sterile tubes, immediately placed on dry ice, and stored at -40℃ until the genomic DNA extraction. Genomic DNA was extracted and purified under the conditions described previously (Yoon and Kim, 2004). Seven primers (BION-02, BION-03, BION-04, BION-08, BION-09, BION-13 and BION-17) were shown to generate the shared loci, specific loci, unique shared loci to each population and shared loci by the three populations which could be obviously scored. The degree of variability was calculated by use of the Dice coefficient (F), which is given by the formula: F = 2 nab / (na+nb), where nab is the number of bands shared between the samples a and b, na is the total number of bands for sample a and nb is the total number of bands for sample b (Jeffreys and Morton, 1987; Yoke-Kqueen and Radu, 2006). Euclidean genetic distances within- and between-population were also calculated by complete linkage method with the support of the hierarchical dendrogram program Systat version 13 (SPSS Inc., Chicago, IL, USA). Here, the seven decamer primers BION-02, BION-03, BION-04, BION-08, BION-09, BION-13 and BION-17 were used to generate the shared loci, specific, unique shared loci to each population and shared loci by the three populations. In the present study, averagely, a decamer primer generated 64.7 amplified products per primer in the AHP population, 55.7 in GHP population and 56.4 in CHP population. The number of unique shared loci to each population and number of shared loci by the four populations generated by genetic analysis using 7 decamer primers in AHP, GHP and CHP population. 119 unique shared loci to each population, with an average of 17 per primer, were observed in the AHP population, and 28 loci, with an average of 4 per primer, were observed in the CHP population. Many researchers studied the sizes of DNA fragments in the PCR profiles of five species of Eastern Pacific abalone (genus Haliotis) (Muchmore et al., 1998), black tiger shrimp (Penaeus monodon) (Tassanakajon et al., 1998), shrimp populations (Yoon and Kim, 2003) and deep sea lobster (Puerulus sewelli) (Park et al., 2005). The hierarchical dendrogram point out three main branches: cluster 1 (ATLANTIC 01 ~ ATLANTIC 07), cluster 2 (GUNSAN 08 ~ GUNSAN 14) and cluster 3 (CHINESE 15 ~ CHINESE 21). The shortest genetic distance displaying significant molecular difference was between individuals’ CHINESE no. 16 and CHINESE no. 18 (0.045). In the long run, individual no. 01 of the AHP population was most distantly related to CHINESE no. 19 (genetic distance = 0.430). The genetic distance between the Indian Ocean lobster and the Korean Slipper lobster species ranged between 0.040 and 0.612 (Park et al., 2005). Consequently, PCR analysis generated on the genetic data displayed that the geographic AHP population was widely separated from CHP population. From what has been said above, the potential of genetic analysis to identify diagnostic markers for the identification of three hairtail populations has been demonstrated. Generally speaking, using a variety of arbitrary primers, PCR has been applied to identify polymorphic/specific markers particular to line, species and geographical population, as well as genetic diversity/polymorphism in diverse species of organisms (McCormack et al. 2000; Yoon and Kim 2004).

A study of subjective ratings for grip strengths based on target force levels

Jun-Hyub Lee,Kyeong-Hee Choi,Jae-Min Shin,Ju-Hee Lee,Yong-Ku Kong 대한인간공학회 2017 대한인간공학회 학술대회논문집 Vol.2017 No.11

Objective: The aim of this study was an analysis for accuracy of subjective ratings for target force levels (%MVC Levels) when there is no feedback of exertions for participants in this analysis. Background: Many studies of perceived force exertion about the static contractions have been conducted with using the Borg CR-10 scale for various levels of target force exertions (i.e., %MVCs). However, there was only few studies for how people correctly estimate their subjective ratings of the grip strength associated with target force levels under no feedback. Method: A total of 10 healthy males were asked to perform their maximum grip strength, and then each participant was also asked to evaluate the subjective rating with the random target force levels (10 ~ 90% MVCs). Results: As the target force level was increased, subjective rating was also increased. In accuracy of subjective ratings for target force levels, 30, 40, 50, and 90% force levels were accurately estimated by the subjective rating of grip strength. However, participants under-estimated for the 10% and 20%MVC, whereas over-estimated for the 60~80% MVCs, respectively. Conclusion: Based on the study of accuracy of subjective perceive ratings for target force levels, people showed under-estimation for the relatively lower levels of target force levels and over-estimation for the higher levels of target force level (90% MVC). Most participants estimated fairly accurate subjective ratings for the target force levels of 40~50% MVCs. Application: The results of this study may applied as for understanding of the subjective rating of grip strength pattern based on the various voluntary grip force levels.

Genetic distances of three Saxidomus purpuratus populations identified by PCR method

Jun-Hyub Jeon,Jong-Man Yoon 한국수산과학회 양식분과 2015 한국수산과학회 양식분과 학술대회 Vol.2015 No.10

Euclidean distances among three purple washington clam populations identified by clustering analysis

Jun-Hyub Jeon,Jong-Man Yoon 한국발생생물학회 2015 한국발생생물학회 학술발표대회 Vol.2015 No.9

Genetic distances of three venerid species identified by PCR analysis

Jun-Hyub Jeon,윤종만 한국패류학회 2015 The Korean Journal of Malacology Vol.31 No.4

The seven selected primers BION-13, BION-29, BION-61, BION-64, BION-68, BION-72 and BION-80 generated the total number of loci, average number of loci per lane and specific loci in Meretrix lusoria (ML), Saxidomus purpuratus (SP) and Cyclina sinensis (CS) species. Here, the complexity of the banding patterns varied dramatically between the primers from the three venerid clam species. The higher fragment sizes (> 1,000 bp) are much more observed in the SP species. The primer BION-68 generated 21 unique loci to each species, which were ascertaining each species, approximately 150 bp, 300 bp and 450 bp, in the ML species. Remarkably, the primer BION-80 detected 7 shared loci by the three clam species, major and/or minor fragments of sizes 500 bp, which were matching in all samples. As regards average bandsharing value (BS) results, individuals from CS clam species (0.754) exhibited higher bandsharing values than did individuals from SP clam species (0.607) (P < 0.05). In this study, the dendrogram obtained by the seven oligonucleotides primers indicates three genetic clusters: cluster 1 (LUSORIA01-LUSORIA07), cluster 2 (PURPURATUS08-PURPURATUS14), cluster 3 (SINENSIS15- SINENSIS21). Among the twenty one venerid clams, the shortest genetic distance that displayed significant molecular differences was between individuals 18 and 20 from the CS species (genetic distance = 0.071), while the longest genetic distance among the twenty-one individuals that displayed significant molecular differences was between individuals LUSORIA no. 02 and PURPURATUS no. 09 (genetic distance = 0.778). Relatively, individuals of SP venerid species were appropriately closely related to that of CS species, as shown in the hierarchical dendrogram of genetic distances. Eventually, PCR fragments exposed in the present study may be worthwhile as a DNA marker the three venerid clam species to discriminate.