• Title/Summary/Keyword: sequence length

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Oviposition Patterns Associated with Prolactin Concentration in Domestic Chicken (Gallus domesticus)

  • David, C.G.;Reddy, I.J.;Khub, Singh
    • Asian-Australasian Journal of Animal Sciences
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    • v.16 no.11
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    • pp.1565-1571
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    • 2003
  • Physiological mechanisms, involved in unusual ovulatory sequences in domestic hen are remaining undefined. One hundred individually caged white leghorn birds were divided into two equal groups viz. control and treatment, and 2-bromo-$\alpha$-ergocryptine, was administered to birds in the treatment group to modulate prolactin (PRL) secretion from anterior pituitary gland. The effect of modulation of PRL concentrations on egg production, sequence length and intersequence pause length were studied by analysis of oviposition records of the birds from 24 to 72 weeks of age. The surviving 48 birds in the control and treatment groups averaged $34.58{\pm}1.7$ and $25.67{\pm}1.15$ sequences of oviposition, with a mean sequence length of $9.92{\pm}0.63$ and ${\pm}1.12$ days respectively. Most of the birds had a single characteristically long sequence during the entire reproductive cycle, which averaged $46.04{\pm}3.09$ days in the control birds and $59.33{\pm}4.44$ days in the treated birds. 2-bromo-$\alpha$-ergocriptine treatments had significantly decreased (p$\leq$0.01) the circulating concentrations of PRL compared to the birds of the control group. This resulted in a significant increase (p$\leq$0.01) in the number of laying days in birds of the treatment group with a concomitant decrease in the intersequence pause length. The decreased PRL levels during prime sequences in birds of the both groups, reveals the negative role of the circulating PRL levels on egg production with concomitant shorter intersequence pause length. Hence, modulation of PRL with dopamine agonist may enhance the reproductive efficiency of hens later in life.

A Comparison of Three Fixed-Length Sequence Generators of Synthetic Self-Similar Network Traffic (Synthetic Self-Similar 네트워크 Traffic의 세 가지 고정길이 Sequence 생성기에 대한 비교)

  • Jeong, Hae-Duck J.;Lee, Jong-Suk R.
    • The KIPS Transactions:PartC
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    • v.10C no.7
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    • pp.899-914
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    • 2003
  • It is generally accepted that self-similar (or fractal) processes may provide better models for teletraffic in modern telecommunication networks than Poisson Processes. If this is not taken into account, it can lead to inaccurate conclusions about performance of telecommunication networks. Thus, an important requirement for conducting simulation studies of telecommunication networks is the ability to generate long synthetic stochastic self-similar sequences. Three generators of pseudo-random self-similar sequences, based on the FFT〔20〕, RMD〔12〕 and SRA methods〔5, 10〕, are compared and analysed in this paper. Properties of these generators were experimentally studied in the sense of their statistical accuracy and times required to produce sequences of a given (long) length. While all three generators show similar levels of accuracy of the output data (in the sense of relative accuracy of the Horst parameter), the RMD- and SRA-based generators appear to be much faster than the generator based on FFT. Our results also show that a robust method for comparative studies of self-similarity in pseudo-random sequences is needed.

SOME REMARKS ON ARTINIAN O-SEQUENCES OF LENGTH 7

  • Shin, Yong-Su
    • Journal of applied mathematics & informatics
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    • v.13 no.1_2
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    • pp.405-411
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    • 2003
  • We prove that 25 different Artinian O-Sequences of codimension 3 type 3 with length 7 among all possible 334 cases are not level.

THE FIBONACCI LENGTH OF CERTAIN CENTRO-POLYHEDRAL GROUPS

  • CAMPBELL C. M.;CAMPBELL P. P.
    • Journal of applied mathematics & informatics
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    • v.19 no.1_2
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    • pp.231-240
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    • 2005
  • We examine the Fibonacci length of certain centro-polyhedral groups and show that in some cases the lengths depend on tribonacci sequences. Further we obtain specific examples of infinite families of three-generator groups with constant, linear and (3-step) Wall number dependent Fibonacci lengths.

Improvement of Performance of Malware Similarity Analysis by the Sequence Alignment Technique (서열 정렬 기법을 이용한 악성코드 유사도 분석의 성능 개선)

  • Cho, In Kyeom;Im, Eul Gyu
    • KIISE Transactions on Computing Practices
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    • v.21 no.3
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    • pp.263-268
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    • 2015
  • Malware variations could be defined as malicious executable files that have similar functions but different structures. In order to classify the variations, this paper analyzed sequence alignment, the method used in Bioinformatics. This method found common parts of the Malwares' API call information. This method's performance is dependent on the API call information's length; if the length is too long, the performance should be very poor. Therefore we removed the repeated patterns in API call information in order to improve the performance of sequence alignment analysis, before the method was applied. Finally the similarity between malware was analyzed using sequence alignment. The experimental results with the real malware samples were presented.

SOME APPLICATIONS OF RESISTANT LENGTH TO ANALYTIC FUNCTIONS

  • Chung, Bo-Hyun
    • Journal of applied mathematics & informatics
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    • v.27 no.5_6
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    • pp.1473-1479
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    • 2009
  • We introduce the resistant length and examine its properties. We also consider the geometric applications of resistant length to the boundary behavior of analytic functions, conformal mappings and derive the theorem in connection with the fundamental sequences, purely geometric problems. The method of resistant length leads a simple proofs of theorems. So it shows us the usefulness of the method of resistant length.

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Molecular Cloning and Alternative Splicing of Growth Hormone Transcripts in Greenling, Hexagrammos otakii (쥐노래미 (Hexagrammos otakii) 성장호르몬 cDNA유전자의 염기서열 변이 및 발현 특성)

  • Nam Yoon Kwon;Kim Dong Soo
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.35 no.6
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    • pp.676-681
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    • 2002
  • Different types of transcripts encoding growth hormone (GH) were identified from cDNA libraries constructed with pituitaries of a marine fish species, greenling (Hexagrammos otakii). GH-homologous cDNA clones were isolated using the high-density filter hybridization and the expressed sequence tag techniques. Of 39 full-length positive cDNA clones, 31 clones ($79\%$) displayed an identical sequence, however, remaining 8 clones exhibited several polymorphisms in their sequences including (1) the length and sequence variability in the 5' upstream region, (2) insertional sequences in open reading frame, and (3) deletion and/or single nucleotide polymorphism in the untranslated 3' region. Based on RT-PCT and RNA dot blot analyses, these transcripts were proven to be expressed in a pituitary-specific manner.

A Test for Randomness of the Binary Random Sequence (이진확률수열의 무작위성 검정)

  • Yeo, In-Kwon
    • The Korean Journal of Applied Statistics
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    • v.27 no.1
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    • pp.115-122
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    • 2014
  • A test for randomness of the binary random sequence is proposed in this paper. The proposed test statistic is based on the mean length of runs distributed with truncated geometric distribution and asymptotically ${\chi}^2_2$-distributed when the size of the sequences is large. A small Monte Carlo simulation compared the size of the test with a significant level as well as evaluated the test power. We applied the proposed method to the sequence of yes or no numbers in Lotto 6/45 and concluded that the randomness of Lotto is retained.

Bridging a Gap between DNA sequences and expression patterns of genes

  • Morishita, Shinichi
    • Proceedings of the Korean Society for Bioinformatics Conference
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    • 2000.11a
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    • pp.69-70
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    • 2000
  • The completion of sequencing human genome would motivate us to map millions of human cDNAs onto the unique ruler "genome sequence", in order to identify the exact address of each cDNA together with its exons, its promoter region, and its alternative splicing patterns. The expression patterns of some cDNAs could therefore be associated with these precise gene addresses, which further accelerate studies on mining correlations between motifs of promoters and expressions of genes in tissues. Towards the realization of this goal, we have developed a time-and-space efficient software named SQUALL that is able to map one cDNA sequence of length a few thousand onto a long genome sequence of length thirty million in a couple of minutes on average. Using SQUALL, we have mapped twenty thousand of our Bodymap (http://bodymap.ims.u-tokyo.ac.jp) cDNAs onto the genome sequences of Chr.21st and 22nd. In this talk, I will report the status of this ongoing project.

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Cleaved Amplified Polymorphic Sequence and Amplified Fragment Length Polymorphism Markers Linked to the Fertility Restorer Gene in Chili Pepper (Capsicum annuum L.)

  • Kim, Dong Sun;Kim, Dong Hwan;Yoo, Jae Hyoung;Kim, Byung-Dong
    • Molecules and Cells
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    • v.21 no.1
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    • pp.135-140
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    • 2006
  • Cytoplasmic male sterility (CMS) in plants, which is due to failure to produce functional pollen, is a maternally inherited trait. Specific nuclear genes that suppress CMS, termed fertility restorer (Rf) genes, have been identified in several plants. In this study, Rfl-inked molecular markers in pepper (Capsicum annuum L.) were detected by bulked segregant analysis of eight amplified fragment length polymorphisms (AFLPs). Only AFRF8 was successfully converted to a cleaved amplified polymorphic sequence (CAPS) marker. This was named AFRF8CAPS and genotype determination using it agreed with that obtained with the original AFRF8. A linkage map with a total size of 54.1 cM was constructed with AFRF8CAPS and the seven AFLP markers using the Kosambi function. The AFRF8CAPS marker was shown to be closest to Rf with a genetic distance of 1.8 cM. These markers will be useful for fast and reliable detection of restorer lines during $F_1$ hybrid seed production and breeding programs in pepper.