• Title/Summary/Keyword: event marker

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Event Valence Matters: Investigating the Moderating Role of Event Valence on Event Markers' Systematic Effect

  • Lee, Hyejin;Choi, Jinhee
    • Asia Marketing Journal
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    • v.16 no.4
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    • pp.59-73
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    • 2015
  • Previous research has revealed that people feel past target events are more distant when they recall more intervening events, event markers, that are both accessible in memory and perceived to be related to that target event (Zauberman, Levav, Diehl, and Bhargave 2010). This phenomenon was called the systematic effect of event markers (SEEM). In this research, we explore the moderating effect of the valence of the target event on SEEM and suggest the difficulty of recalling event markers as the possible mechanism. Study 1 shows that SEEM mainly occur when the valence of the target event is negative rather than positive. Study 2 showed that even though people have more difficulty recalling four event markers than one regardless of event valence, the difficulty of recalling event markers only mediates SEEM when the target event valence is negative. Furthermore, when the target event is positive, SEEM does not exist, confirming that the mediating role of the difficulty of recalling event markers on SEEM is moderated by the valence of the target event.

Quantitative evaluation of the molecular marker using droplet digital PCR

  • Shin, Wonseok;Kim, Haneul;Oh, Dong-Yep;Kim, Dong Hee;Han, Kyudong
    • Genomics & Informatics
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    • v.18 no.1
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    • pp.4.1-4.6
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    • 2020
  • Transposable elements (TEs) constitute approximately half of Bovine genome. They can be a powerful species-specific marker without regression mutations by the structure variation (SV) at the time of genomic evolution. In a previous study, we identified the Hanwoo-specific SV that was generated by a TE-association deletion event using traditional PCR method and Sanger sequencing validation. It could be used as a molecular marker to distinguish different cattle breeds (i.e., Hanwoo vs. Holstein). However, PCR is defective with various final copy quantifications from every sample. Thus, we applied to the droplet digital PCR (ddPCR) platform for accurate quantitative detection of the Hanwoo-specific SV. Although samples have low allele frequency variation within Hanwoo population, ddPCR could perform high sensitive detection with absolute quantification. We aimed to use ddPCR for more accurate quantification than PCR. We suggest that the ddPCR platform is applicable for the quantitative evaluation of molecular markers.

Contrastive Topic In Vietnamese

  • Ba, Nguyen Hoai Thu;Lee, Chung-Min
    • Annual Conference on Human and Language Technology
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    • 2004.10d
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    • pp.323-328
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    • 2004
  • The main concern of the paper is to establish a hypothesis in which the form thi is treated as a particular Contrastive Topic marker in Vietnamese sentence structure. We have investigated that the form thican be placed after a topical nominal or verbal to compose a Contrastive Topic phrase. Not only the subjects or objects but predicates in Vietnamese can have a CT interpretation with the marker thi. The thi-phrase not only refers to an entity or event the speaker wants to talk about, but also indicates that there exist contrastive alternatives the speaker wants to talk about. The nature of the contrastive topic decides the nature the alternative set and the choice of the topic of the implicated proposition. When the set of alternatives does not have the characteristic of scale, we have a descriptive opposite implicature. Again, if the contrastive set is a scalar set, we gat a denial-of expectation implicature.

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Estimation of the time-dependent AUC for cure rate model with covariate dependent censoring

  • Yang-Jin Kim
    • Communications for Statistical Applications and Methods
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    • v.31 no.4
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    • pp.365-375
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    • 2024
  • Diverse methods to evaluate the prediction model of a time to event have been proposed in the context of right censored data where all subjects are subject to be susceptible. A time-dependent AUC (area under curve) measures the predictive ability of a marker based on case group and control one which are varying over time. When a substantial portion of subjects are event-free, a population consists of a susceptible group and a cured one. An uncertain curability of censored subjects makes it difficult to define both case group and control one. In this paper, our goal is to propose a time-dependent AUC for a cure rate model when a censoring distribution is related with covariates. A class of inverse probability of censoring weighted (IPCW) AUC estimators is proposed to adjust the possible sampling bias. We evaluate the finite sample performance of the suggested methods with diverse simulation schemes and the application to the melanoma dataset is presented to compare with other methods.

Rapid and Unequivocal Identification Method for Event-specific Detection of Transgene Zygosity in Genetically Modified Chili Pepper

  • Kang, Seung-Won;Lee, Chul-Hee;Seo, Sang-Gyu;Han, Bal-Kum;Choi, Hyung-Seok;Kim, Sun-Hyung;Harn, Chee-Hark;Lee, Gung-Pyo
    • Horticultural Science & Technology
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    • v.29 no.2
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    • pp.123-129
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    • 2011
  • To identify unintended vertical gene-transfer rates from the developed transgenic plants, rapid and unequivocal techniques are needed to identify event-specific markers based on flanking sequences around the transgene and to distinguish zygosity such as homo- and hetero-zygosity. To facilitate evaluation of zygosity, a polymerase chain reaction technique was used to analyze a transgenic pepper line B20 (homozygote), P915 wild type (null zygote), and their F1 hybrids, which were used as transgene contaminated plants. First, we sequenced the 3'-flanking region of the T-DNA (1,277 bp) in the transgenic pepper event B20. Based on sequence information for the 3'- and 5'-flanking region of T-DNA provided in a previous study, a primer pair was designed to amplify full length T-DNA in B20. We successfully amplified the full length T-DNA containing 986 bp from the flanking regions of B20. In addition, a 1,040 bp PCR product, which was where the T-DNA was inserted, was amplified from P915. Finally, both full length T-DNA and the 1,040 bp fragment were simultaneously amplified in the F1 hybrids; P915 ${\times}$ B20, Pungchon ${\times}$ B20, Gumtap ${\times}$ B20. In the present study, we were able to identify zygosity among homozygous transgenic event B20, its wild type P915, and hemizygous F1 hybrids. Therefore, this novel zygosity identification technique, which is based on PCR, can be effectively used to examine gene flow for transgenic pepper event B20.

Development of a Sequence Characteristic Amplified Region Marker linked to the L4 Locus Conferring Broad Spectrum Resistance to Tobamoviruses in Pepper Plants

  • Kim, Hyun Jung;Han, Jung-Heon;Yoo, Jae Hyoung;Cho, Hwa Jin;Kim, Byung-Dong
    • Molecules and Cells
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    • v.25 no.2
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    • pp.205-210
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    • 2008
  • To develop molecular markers linked to the $L^4$ locus conferring resistance to tobamovirus pathotypes in pepper plants, we performed AFLP with 512 primer combinations for susceptible (S pool) and resistant (R pool) DNA bulks against pathotype 1.2 of pepper mild mottle virus. Each bulk was made by pooling the DNA of five homozygous individuals from a T10 population, which was a near-isogenic $BC_4F_2$ generation for the $L^4$ locus. A total of 19 primer pairs produced scorable bands in the R pool. Further screening with these primer pairs was done on DNA bulks from T102, a $BC_{10}F_2$ derived from T10 by back crossing. Three AFLP markers were finally selected and designated L4-a, L4-b and L4-c. L4-a and L4-c each underwent one recombination event, whereas no recombination for L4-b was seen in 20 individuals of each DNA bulk. Linkage analysis of these markers in 112 $F_2$ T102 individuals showed that they were each within 2.5 cM of the $L^4$ locus. L4-b was successfully converted into a simple 340-bp SCAR marker, designated L4SC340, which mapped 1.8 cM from the $L^4$ locus in T102 and 0.9 cM in another $BC_{10}F_2$ population, T101. We believe that this newly characterized marker will improve selection of tobamovirus resistance in pepper plants by reducing breeding cost and time.

標記"了"的認知解析考察

  • Lee, Ju-Eun
    • 중국학논총
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    • no.53
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    • pp.1-16
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    • 2017
  • The grammatical meaning of "了", a marker of aspects in Mandarin has been described differently among researchers, three of which are to express the end, a certain phase of event and the start of an event or a state. This paper consists of four parts. Set out below is a summary of main points of each part. The first chapter elaborates on the results of previous related studies, points out the purpose and meaning of the current study. Chapter two introduces marked "了" including concepts of the meaning and "Done", "complete whole", "realization" Corresponds to the case study. And explains syntactic and semantic features of the "了", highlights the look "of the了" problems of syntax and semantics, "了2" made three domains Limit 3 Including of the knowledge. This chapter holds that its grammartical meaning can be described as follows an event has taken place or a state has formed prior to a certain reference time, and that the grammartical meanings mentioned above can be considered sub - grammartical meanings of "了",which result from different prominence of the phases of an event. Chapter three explains tag component of the "了1", "了2". It discusses limited constraints, first place for "了" syntactic meaning, "The End" and "extension" of the opposition for "了" is looming around the root system, "了" and "着" sentence structure and semantic and syntactic forms. Chapter four discusses bounded features of the 了. It mainly focuses on "了"of bounded / unbounded function. It analyses the functions of components and explains a bounded function of "了1" and a bounded function of "了2". Chapter five is the conclusion. It consolidates and summarises the previous contents of the paper and points out the conclusion.

Genetic information analysis for the development of an event-specific PCR marker for herbicide tolerance LM crops

  • Do Yu, Kang;Myung Ho, Lim;Soo In, Sohn;Hyun Jung, Kang;Tae Sung, Park
    • Korean Journal of Agricultural Science
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    • v.48 no.4
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    • pp.1051-1065
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    • 2021
  • Recent times have seen sustained increases in genetically modified (GM) crops not only for cultivation but also for the utility of food and feed worldwide. Domestically, commercial planting and the accidental or unintentional release of living modified (LM) crops into the environment are not approved. Many detection methods had been devised in an effort to realize effective management of the safety of agricultural genetic resources. In order to develop event-specific polymerase chain reaction (PCR) markers for LM crops, we analyzed the genetic information of LM crops. Genetic components introduced into crops are of key importance to provide a basis for the development of detection methods for LM crops. To this end, a total of 18 varieties from four major LM crop species (maize, canola, cotton, and soybeans) were subjected to an analysis. The genetic components included introduced genes, promoters, terminators and selection markers. Thus, if proper monitoring techniques and single or multiplex PCR strategies that rely on selection markers can be established, such an accomplishment can be regarded as a feasible solution for the safe management of staple crop resources.

Untouched Camera Mouse System for The Disabled Person's Assistant Device (뇌병변 장애인 보조기기용 노터치 카메라 마우스 시스템)

  • Bae, Ki-Tae
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.9
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    • pp.3465-3471
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    • 2010
  • In this paper, we propose assistant device system based on camera that can perform general mouse function for the physically disabled. Most disabled people use special hardware and rely largely on foreign-made assistance device and the using rate of assistance device was very low because of high price. To solve this problem, we propose effective system based on web camera that can perform general mouse function and can raise accessibility for the physically disabled. In the proposed method, we firstly attach color marker on arbitrary device or body parts and then input the information of color using camera and extract coordinate information of color marker and finally, match processing information(coordinate) to special event(keyboard, mouse) and control various applications. The proposed method shows good performance in price and performance compared with other techniques by real field test.

Enhanced Green Fluorescent Protein Gene under the Regulation of Human Oct4 Promoter as a Marker to Identify Reprogramming of Human Fibroblasts

  • Heo, Soon-Young;Ahn, Kwang-Sung;Kang, Jee-Hyun;Shim, Ho-Sup
    • Reproductive and Developmental Biology
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    • v.32 no.2
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    • pp.135-140
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    • 2008
  • Recent studies on nuclear transfer and induced pluripotent stem cells have demonstrated that differentiated somatic cells can be returned to the undifferentiated state by reversing their developmental process. These epigenetically reprogrammed somatic cells may again be differentiated into various cell types, and used for cell replacement therapies through autologous transplantation to treat many degenerative diseases. To date, however, reprogramming of somatic cells into undifferentiated cells has been extremely inefficient. Hence, reliable markers to identify the event of reprogramming would assist effective selection of reprogrammed cells. In this study, a transgene construct encoding enhanced green fluorescent protein (EGFP) under the regulation of human Oct4 promoter was developed as a reporter for the reprogramming of somatic cells. Microinjection of the transgene construct into pronuclei of fertilized mouse eggs resulted in the emission of green fluorescence, suggesting that the undifferentiated cytoplasmic environment provided by fertilized eggs induces the expression of EGFP. Next, the transgene construct was introduced into human embryonic fibroblasts, and the nuclei from these cells were transferred into enucleated porcine oocytes. Along with their in vitro development, nuclear transfer embryos emitted green fluorescence, suggesting the reprogramming of donor nuclei in nuclear transfer embryos. The results of the present study demonstrate that expression of the transgene under the regulation of human Oct4 promoter coincides with epigenetic reprogramming, and may be used as a convenient marker that non-invasively reflects reprogramming of somatic cells.