• 제목/요약/키워드: expression of pattern

검색결과 1,611건 처리시간 0.027초

케이블 니팅의 표현 유형에 관한 연구 (A Study on the Expression Types of Cable Knitting)

  • 김성달
    • 패션비즈니스
    • /
    • 제22권5호
    • /
    • pp.41-51
    • /
    • 2018
  • Cable knitting, one of the most representative structures of knitwear has been applied to a number of knit items in a variety of expressions every season. The purpose of this study is to analyze the various types of expressions applied with cable knitting techniques to make the necessary data for planning cable knit designs. The types of cable knitting were devide into two categories which are based on the cable knitting pattern and structure. Based on the pattern, firstly, formal type is a reproduction of traditional Aran knit style and is usually applied to a practical and comfortable timeless knit product. Secondly, informal type is irregular applied to patterns and directions to highlight the dynamics of cable patterns. Thirdly, contrasting type emphasizes the cable pattern by contrasting the color of the part of the cable pattern. Fourthly, figurative type is the expression of the conceptual motifs and using the cable knit pattern itself as motif. Based on the structure, firstly, open type is to emphasize patterns and spaces by utilizing open spaces created by the intersection of cabling stitches. Secondly, decorative type is to enhance the ornamental effect of cable knitting by various methods and other subsidiary materials. Thirdly, avant-garde type is applied in various ways with exaggerated volumes or textures using the three-dimensional effects of cable knitting. Through this study, we look forward to the possibility of expressing the unique aesthetic characteristics of each of the various knitting techniques.

Multiscale Adaptive Local Directional Texture Pattern for Facial Expression Recognition

  • Zhang, Zhengyan;Yan, Jingjie;Lu, Guanming;Li, Haibo;Sun, Ning;Ge, Qi
    • KSII Transactions on Internet and Information Systems (TIIS)
    • /
    • 제11권9호
    • /
    • pp.4549-4566
    • /
    • 2017
  • This work presents a novel facial descriptor, which is named as multiscale adaptive local directional texture pattern (MALDTP) and employed for expression recognition. We apply an adaptive threshold value to encode facial image in different scales, and concatenate a series of histograms based on the MALDTP to generate facial descriptor in term of Gabor filters. In addition, some dedicated experiments were conducted to evaluate the performance of the MALDTP method in a person-independent way. The experimental results demonstrate that our proposed method achieves higher recognition rate than local directional texture pattern (LDTP). Moreover, the MALDTP method has lower computational complexity, fewer storage space and higher classification accuracy than local Gabor binary pattern histogram sequence (LGBPHS) method. In a nutshell, the proposed MALDTP method can not only avoid choosing the threshold by experience but also contain much more structural and contrast information of facial image than LDTP.

심층 패킷검사를 위한 정규표현식 패턴매칭 하드웨어 구조 (A Hardware Architecture of Regular Expression Pattern Matching for Deep Packet Inspection)

  • 윤상균;이규희
    • 한국컴퓨터정보학회논문지
    • /
    • 제16권5호
    • /
    • pp.13-22
    • /
    • 2011
  • 최근의 네트워크 침입탐지 시스템들은 침입패턴을 나타내는 데 정규표현식을 사용하고 있으며 빠른 심층 패킷 검사를 위해서 하드웨어 기반의 패턴매칭이 필요하다. 하드웨어 기반 정규표현식 패턴매칭에 대한 많은 연구가 이루어졌으나 {10}과 같은 제한반복 연산자에 대한 구현은 제약이 있었다. 본 논문에서는 일반적인 정규표현식 서브패턴에 대한 제한반복을 더 낮은 하드웨어 복잡도로 구현할 수 있는 제한반복 블록 구조를 제시하였다. 제안된 제한반복 블록은 단일 문자, 고정길이 문자 뿐 만 아니라 일반적인 정규표현식 서브패턴의 제한반복 구현도 가능하다. 제안된 제한반복 블록 구조는 모든 제한반복을 펼치지 않고 구현할 수 있도록 하여 정규표현식 패턴매칭 하드웨어를 더 효율적으로 구현할 수 있도록 하였다.

얼굴 표정 인식을 위한 지역 미세 패턴 기술에 관한 연구 (A Study on Local Micro Pattern for Facial Expression Recognition)

  • 정웅경;조영탁;안용학;채옥삼
    • 융합보안논문지
    • /
    • 제14권5호
    • /
    • pp.17-24
    • /
    • 2014
  • 본 논문에서는 얼굴 표정 인식을 위한 지역미세패턴(local micro pattern)의 하나인 LBP(Local Binary Pattern) 코드의 잡음에 대한 단점을 해결하기위하여 새로운 미세패턴 방법인 LDP(Local Directional Pattern)를 제안한다. 제안된 방법은 LBP의 문제점을 해결하기 위해 $m{\times}m$ 마스크를 이용하여 8개의 방향 성분을 구하고, 이를 크기에 따라서 정렬한 후 상위 k개를 선정하여 해당 방향을 나타내는 비트를 1로 설정한다. 그리고 8개의 방향 비트를 순차적으로 연결하여 최종 패턴 코드를 생성한다. 실험결과, 제안된 방법은 기존 방법에 비해 회전에 대한 영향이 적으며, 잡음에 대한 적응력이 현저히 높았다. 또한, 제안된 방법을 기반으로 얼굴의 영구적인 특징과 일시적인 특징을 함께 표현하는 새로운 지역미세패턴의 개발이 가능함을 확인하였다.

Expression of Cancer-Testis Antigens in Pediatric Cancers

  • Ghafouri-Fard, Soudeh
    • Asian Pacific Journal of Cancer Prevention
    • /
    • 제16권13호
    • /
    • pp.5149-5152
    • /
    • 2015
  • Cancer-testis antigens (CTAs) are a group of tumor-associated antigens with more than 140 members whose expression has been shown to be limited to gametogenic tissues and placenta among normal tissues. However, malignant tissues of different origins have shown aberrant and elevated expression of these antigens. Such a pattern of expression endows beneficial properties for use as cancer biomarkers as well as immunotherapeutic targets as a result of the immune-privileged status of the testes. CTAs have been shown to be expressed in pediatric brain tumors, different types of sarcomas, leukemias, and lymphomas as well as neuroblastomas. Although data regarding their expression pattern in childhood tumors are not as comprehensive as for adult tumors, it is supposed that CTA-based immunotherapeutic approaches can also be used for pediatric cancers. However, there are limited data about the objective clinical responses following immunotherapy in such patients. Here we try to review the available information.

Expression of Replication-Independent Chicken H3.3 Histone Gene without Introns

  • Son, Seung-Yeol;Hong, Bum-Shik
    • BMB Reports
    • /
    • 제30권3호
    • /
    • pp.200-204
    • /
    • 1997
  • We eliminated introns from replication independent chicken H3.3 histone gene using a H3.3 cDNA clone and a genomic H3.3 clone. After introduction into Rat 3 cells, we observed its pattern of expression by analyzing mRNA from different phases of the cell cycle. Even without introns, the H3.3 gene was expressed constitutively at a low level throughout the cell cycle. This indicates that the introns in the H3.3 gene are not responsible for the cell cycle-independent expression of the gene. This result contradicts previous reports that suggested their importance in cell cycle regulated expression. We believe that other regions of the gene, promoter, coding region, and/or 3'-end of the gene, are involved in its expression pattern.

  • PDF

2개의 대칭표면구열의 구열형상변화 예측 (Prediction of the crack aspect change in twin surface cracks)

  • 최용식;김재원
    • 오토저널
    • /
    • 제14권2호
    • /
    • pp.65-75
    • /
    • 1992
  • An analytical scheme for predicting the crack aspect pattern of materials which contain twin surface cracks was developed. Fatigue tests were performed on twin surface cracked PMMA plate specimens to obtain the interaction factor accounting for the interference effect of adjacent cracks. Here, the interaction factor is defined as the ratio of the stress intensity factor for twin surface cracks to that for a single surface crack. From the analysis of the fatigue test result, the interaction factor was presented as the ninth-order polynomial expression having a function of dimensionless crack spacing ratio. Then the polynomial expression was incorporated into the prediction program of the crack aspect pattern for twin surface cracked materials. And, the interaction effect and the coalescence condition of adjacent cracks were simplified in the newly developed prediction scheme of the crack aspect pattern. The predicted crack growth pattern using the prediction scheme was compared with test data from PMMA specimen. The predicted pattern agreed well with the test data.

  • PDF

Concatemer-Associated Transgene Expression Patterns in Transgenic Marine Medaka Oryzias dancena Strains

  • Cho, Young Sun;Kim, Dong Soo;Nam, Yoon Kwon
    • Fisheries and Aquatic Sciences
    • /
    • 제18권1호
    • /
    • pp.73-80
    • /
    • 2015
  • To examine the interrelationship between transgenic insertion patterns and transgene expression profiles in established transgenic fish lines, four stable transgenic marine medaka Oryzias dancena germlines harboring ${\beta}$-actin regulator-driven RFP reporter constructs were selected. The established transgenic strains were characterized with regard to their transgenic genotypes (insertion pattern, concatemer formation, and transgene copy number based on genomic Southern blot hybridization and qPCR assay) and expression characteristics at the mRNA (qRT-PCR), protein (western blot), and phenotypic (fluorescent appearance) levels. From comparative examinations, it was found that transgenic expression at both the transcription and translation levels could be significantly downregulated in transgenic strains, potentially through methylation-mediated transgene silencing that was particularly associated with the formation of a long tail-to-head tandem concatemer in the chromosomal integration site(s). When this occurred, an inverse relationship between the transgene copy number and fluorescence intensity was observed in the resultant transgenic fish. However, with the other transgenic genotype, transgenic individuals with an identical Southern blot hybridization pattern, containing a tandem concatemer(s), had very different expression levels (highly robust vs. low expression strengths), which was possibly related to the differential epigenetic modifications and/or degrees of methylation. The concatemer-dependent downregulation of transgene activity could be induced in transgenic fish, but the overall pattern was strain-specific. Our data suggest that neither a low (or single) transgene copy number nor tandem transgene concatemerization is indicative of strong or silenced transgene expression in transgenic fish carrying a ubiquitous transgene. Hence, a sufficient number of transgenic lineages, with different genotypes, should be considered to ensure the establishment of the best-performance transgenic line(s) for practical applications.

Gene Expression Analysis of Zeaxanthin Epoxidase from the Marine Microalga Dunaliella tertiolecta in Response to Light/Dark Cycle and Salinity

  • Kim, Minjae;Kang, Yongsoo;Jin, EonSeon
    • Journal of Microbiology and Biotechnology
    • /
    • 제29권9호
    • /
    • pp.1453-1459
    • /
    • 2019
  • Zeaxanthin is an important pigment in the photo-protection mechanism of microalgae. However, zeaxanthin epoxidase, an enzyme involved in the accumulation and conversion of zeaxanthin, has not been extensively studied in microalgae. In this work, we report the expression pattern of zeaxanthin epoxidase in Dunaliella tertiolecta (DtZEP) at different light and diverse salinity conditions. To confirm the responsiveness to light conditions, the ZEP expression pattern was investigated in photoperiodic (16 h of light and 8 h of dark) and continuous (24 h of light and 0 h of dark) light conditions. mRNA expression levels in photoperiodic conditions fluctuated along with the light/dark cycle, whereas those in continuous light remained unchanged. In varying salinity conditions, the highest mRNA and protein levels were detected in cells cultured in 1.5 M NaCl, and ZEP expression levels in cells shifted from 0.6 M NaCl to 1.5 M NaCl increased gradually. These results show that mRNA expression of DtZEP responds rapidly to the light/dark cycle or increased salinity, whereas changes in protein synthesis do not occur within a short period. Taken together, we show that DtZEP gene expression responds rapidly to light irradiation and hyperosmotic stress. In addition, ZEP expression patterns in light or salinity conditions are similar to those of higher plants, even though the habitat of D. tertiolecta is different.

The overexpression of Arachis hypogaea resveratrol synthase 3 (AhRS3) modified the expression pattern of phenylpropanoid pathway genes in developing rice seeds

  • Lee, Choonseok;Jeong, Namhee;Kim, Dool-Yi;Ok, Hyun-Choong;Choi, Man-Soo;Park, Ki-Do;Kim, Jaehyun
    • 한국작물학회:학술대회논문집
    • /
    • 한국작물학회 2017년도 9th Asian Crop Science Association conference
    • /
    • pp.167-167
    • /
    • 2017
  • Our previous study for developing seeds of Iksan 526 (I.526), an inbred line of resveratrol-producing transgenic rice line, showed that, in 20 days after heading (DAH) seeds, resveratrol was almost saturated and accumulation of piceid was highest though the expression of Arachis hypogaea resveratrol synthase 3 (AhRS3, GenBank DQ124938) was highest in 31 DAH seeds. In this study, it was investigated how the overexpression of AhRS3 affects phenylpropanoid pathway genes. p-Coumaroyl-CoA is derived from phenylpropanoid pathway and used as a substrate of AhRS3 reaction for resveratrol production. In 6, 13, 20, 31 and 41 (45 for Dongjin) DAH seeds of I526 and Dongjin, a wild type of I.526, respectively, the expression pattern of phenylpropanoid pathway genes, including phenylalanine ammonia-lyase (PAL: LOC_Os02g41630.2, LOC_Os04g43760.1), cinnamate 4-hydroxylase (C4H: LOC_Os05g25640.1), 4-coumarate-CoA ligase (4CL: LOC_Os02g08100.1), cinnamoyl-CoA reductase (CCR: LOC_ Os09g25150.1, LOC_Os08g34280.1), hydroxycinnamoyl-CoA shikimate/quinate hydroxycinnamoyl transferase (HCT: LOC_Os04g42250.2, LOC_Os02g39850.1) and cinnamyl alcohol dehydrogenase (CAD: LOC_Os02g09490.1), was examined using real time (RT)-PCR. Compared to developing seeds of Dongjin, RT-PCR results showed that the expression pattern of phenylpropanoid pathway genes was modified in developing seeds of I.526. In most genes, except for CAD, of I.526 developing seeds, the gene expression was highest in 20 DAH corresponding to biosynthesis of resveratrol and piceid, i.e. the expression of phenylpropanoid pathway genes was gradually increased by 20 DAH and decreased as seeds develop. Especially, in Dongjin, the highest expression of PALs and 4CL was in 6 DAH and their expression was gradually decreased as seeds develop. These genes expression data also exhibited that, in developing seeds of I.526, phenylpropanoid pathway genes were slightly or significantly (in some genes) upregulated compared to Dongjin. Therefore, the overexpression of AhRS3 changed the expression pattern of phenylpropanoid pathway genes in I.526 developing seeds and this modification for gene expression is closely related to biosynthesis of resveratrol and piceid.

  • PDF