• Title/Summary/Keyword: null sequences

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Effect of Transposable Element Insertion on Gene Expression (Transposable Element 삽입의 유전자 발현에 미치는 영향)

  • 김화영
    • Proceedings of the Botanical Society of Korea Conference
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    • 1987.07a
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    • pp.349-356
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    • 1987
  • Insertions of transposable elements in or near a structural gene give rise to null phenotypes, reduced levels of gene expression, or alteration on the tissue-specific pattern of gene expression. Null phenotypes often result from insertions in exons. Reduced levels of gene expression results from insertions in various regions such as promoter region, 5' non-translated region, exon and intron. The maize allele of Adh1-3F1124 is an example of alteration in the tissue-specific patetern of gene expression. Adh1-3F1124 contains a Mu element inserted 31 bp 5' to the transcriptional start site of the wild-type Adh1 activity in seeds and anaerobically-treated seedlings but normal levels in the pollen. Upon the insertion of a transposable element a certain number of host DNA sequences at the insertion site is duplcated. When transposable elements excise, all element sequences are deleted. However, the duplicated host sequences may be left intact or deleted to various extents. This results in null phenotypes, restoration of original levels of gene expression, or altered levels of gene expression. On the basis of effects of transposable-element insertions or excisions on gene expression, the usefulness of transposable ellements for studies on gene expression is discussed.

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SEQUENCES IN THE RANGE OF A VECTOR MEASURE

  • Song, Hi Ja
    • Korean Journal of Mathematics
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    • v.15 no.1
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    • pp.13-26
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    • 2007
  • We prove that every strong null sequence in a Banach space X lies inside the range of a vector measure of bounded variation if and only if the condition $\mathcal{N}_1(X,{\ell}_1)={\Pi}_1(X,{\ell}_1)$ holds. We also prove that for $1{\leq}p<{\infty}$ every strong ${\ell}_p$ sequence in a Banach space X lies inside the range of an X-valued measure of bounded variation if and only if the identity operator of the dual Banach space $X^*$ is ($p^{\prime}$,1)-summing, where $p^{\prime}$ is the conjugate exponent of $p$. Finally we prove that a Banach space X has the property that any sequence lying in the range of an X-valued measure actually lies in the range of a vector measure of bounded variation if and only if the condition ${\Pi}_1(X,{\ell}_1)={\Pi}_2(X,{\ell}_1)$ holds.

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Image Encryption using 90/150 NBCA structure (90/150 NBCA 구조를 이용한 영상 암호화)

  • Nam, Tae-Hee;Kim, Seok-Tae;Cho, Sung-Jin
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2009.05a
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    • pp.152-155
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    • 2009
  • In this paper, we propose the image encryption method using complemented MLCA based on 90/150 NBCA(Null Boundary Cellular Automata). The encryption method is processed in the following order. First, complemented MLCA, which is derived from linear LFSR, is used to produce a PN(pseudo noise) sequence, which matches the size of the original image. Then, the created complemented MLCA sequence goes through a XOR operation with the original image to become encrypted. Lastly, an experiment is processed to verify the effectiveness of this method.

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CERTAIN SEQUENCE SPACES AND RELATED DUALS WITH RESPECT TO THE b-METRIC

  • Kadak, Ugur
    • Communications of the Korean Mathematical Society
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    • v.31 no.2
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    • pp.277-294
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    • 2016
  • The aim of this paper is to present the classical sets of sequences and related matrix transformations with respect to the b-metric. Also, we introduce the relationships between these sets and their classical forms with corresponding properties including convergence and completeness. Further we determine the duals of the new spaces and characterize matrix transformations on them into the sets of b-bounded, b-convergent and b-null sequences.

ON THE SOLUTION OF NONLINEAR EQUATIONS CONTAINING A NON-DIFFERENTIABLE TERM

  • Argyros, Ioannis K.
    • East Asian mathematical journal
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    • v.24 no.3
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    • pp.295-304
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    • 2008
  • We approximate a locally unique solution of a nonlinear operator equation containing a non-differentiable operator in a Banach space setting using Newton's method. Sufficient conditions for the semilocal convergence of Newton's method in this case have been given by several authors using mainly increasing sequences [1]-[6]. Here, we use center as well as Lipschitz conditions and decreasing majorizing sequences to obtain new sufficient convergence conditions weaker than before in many interesting cases. Numerical examples where our results apply to solve equations but earlier ones cannot [2], [5], [6] are also provided in this study.

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Improved non-parametric Model for Moving object segmentation by null hypothesis (귀무가설을 이용한 비모수 움직임 영상 검출 모델의 개선)

  • Lee, Ki-Sun;Na, Sang-Il;Lee, Jun-Woo;Jeong, Dong-Seok
    • Proceedings of the IEEK Conference
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    • 2007.07a
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    • pp.249-250
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    • 2007
  • Background subtraction is a method typically used to segment moving regions in image sequences taken from a static camera by comparing each new frame to a model of the scene background. We present a improved non-parametric background model by null hypothesis. Evaluation shows that this approach achieves very sensitive detection with very low false alarm rates.

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Development of SSLP Marker Targeted to P34 Null Gene in Soybean (콩 P34 단백질 결핍 유전자를 이용한 SSLP 마커 개발)

  • Yang, Kiwoung;Ko, Jong-Min;Lee, Young-Hoon;Jeon, Myeong Gi;Jung, Chan-Sik;Baek, In-Youl;Kim, Hyun-Tae;Park, Keum-Yong
    • Korean Journal of Breeding Science
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    • v.42 no.5
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    • pp.502-506
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    • 2010
  • Soybean seed possesses about 15 allergenic proteins recognized by IgEs from soy-sensitive human. The allergenic impact of soybean proteins limit its extensive usage in a broad range of processed foods. Soybean protein P34 or Gly m Bd 30k of the cysteine protease family is one of the major allergen of the soybean seed. P34-null soybean, PI567476, was identified among soybean (Glycine max & Glycine soja Sieb. and Zucc) of approximately 16,226 accessions from USDA soybean germplasm screened. Also, for P34 gene (Williams 82; whole genome sequence cultivar) and P34 null gene (PI567476) comparative analysis of sequences listed in the NCBI database showed the presence of a SSLP (Simple Sequence Length Polymorphism) of 4 base pair. So, a SSLP marker was designed to reveal the polymorphism of the locus. In this study, a population of 339 $F_2$ recombinant inbred lines generated by cross between Taekwang (Glycine max) and PI567476 was used to select $F_{2:3}$ plant of a P34 null gene. The result separation rate Taekwang type, heterozygous type and PI567476 type were shown in 85: 187: 67 since single gene is concerned in as the separation rate of 1:2:1 in $X^2{_{0.05}}=5.99$, df=2. In future, selected plant will identify protein level, whether P34 null protein is equal to P34 null gene.