• Title/Summary/Keyword: Demeter

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Formulations of the Law of Demeter in the Object Oriented Programming (객체지향 프로그래밍에서의 Demeter 법칙의 정식화)

  • Hwang, Seok-Hyeong;Lee, Yong-Geun;Yang, Hae-Sul
    • The Transactions of the Korea Information Processing Society
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    • v.1 no.1
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    • pp.63-72
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    • 1994
  • In the last years, several articles have been devoted to the study of the Law of Demeter in the object oriented programming. The Law of Demeter is a style rule that aims at eliminating unnecessary coupling among classes. Although a large number of studies have been made on the informal definitions, little is known about the formulation of the Law of Demeter. In this article, we define three relationships among classes i.e. inheritance, aggregation and association, and formulate the Law of Demeter. We also propose the algorithms to decide whether a given program satisfies the law and to transform an unfulfilled program into a fulfilled one.

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A Study on the Goddess Demeter in The Homeric Hymn to Demeter (<데메테르 찬가>에 구현된 '어머니 데메테르'의 특성과 그 신화사적 위상)

  • Jeong, Jinhee
    • Cross-Cultural Studies
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    • v.51
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    • pp.73-101
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    • 2018
  • This essay deals with The Homeric Hymn to Demeter, a aetiological myth about the Eleusis Mysteria. The narrative of the hymn shows how Demeter, the goddess of grain, became the deity of the Mysteria. In the hymn, Demeter is characterized as a mother: She is the mother of Persephone and the motherlike nurse of Demophone. As the mother of Persephone and Demophone, the roles of are nursing and mediating. She care her children and linked the earth and the world below, the heaven of gods and the earth of mortals. Demeter the deity of the Mysteria by a mother. The and the maternity of Demeter is connected with patriarchal politics. Demeter in the hymn is not so much the goddess who derived her character from The Great Mother as the goddess who had been characterized the influence of Greek-patriarchy.

Environmental Adaptation of Tall Fescue Varieties in Mountainous Pastures IV. Evaluation of winter hardiness by DW / RTAR (Tall Fescue 품종의 환경적응성 IV. 상대경수 출현율당 개체중에 의한 월동성의 평가)

  • Lee, Ju-Sam;Han, Sung-Yoon;Jo, Ik-Hwan
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.13 no.4
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    • pp.251-256
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    • 1993
  • This experiments was carried out to evaluate the potential winter hardiness of tall fescue varieties based on the data of dry weight of plant per relative tiller appearance rates(DW/RTAR) in mountainous pastures of Taekwalyon area. The results obtained were as follows; 1. The varieties were classified into 2 groups by dry weight of plant per relative tiller appearance rates (DW/RTAR). Thus. Forager and Fuego belong to the group with more than 2.0 in DW/RTAR but Barcel, Barvetia, Demeter, Enforcer. Johnstone, Safe and Stef belong to the group with less than 2.0 in DW/RTAR respectively. 2. The dry weight of plant per relative tiller appearance rates(DM/RTAR) and dry weight of plant(DW) of 1st cutting were significantly positive correlated with number of heading tillers and dry weight of heading tillers. 3. The dry weight of plant per relative tiller appearance rates(DW/RTAR) was significantly positive correlated with dry weight of plant(DW) of final cutting and of 1st cutting. 4. The varieties with high DW/RTAR showed a high dry weight of plant(DW) of 1st cutting. Accordingly, it was concluded that DW/RTAR is a valuable character for evaluating potential winter hardiness of tall fescue on mountainous pastures of Taekwalyon area.

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A study of Creation of Hair-by-night Styles Using Art Nouveau Patterns (아르누보 문양을 응용한 헤어바이나이트 디자인 개발)

  • Lee, Jin-Hui;Jeon, So-Ri;Lee, Jae-Sook
    • Journal of Digital Convergence
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    • v.12 no.12
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    • pp.601-609
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    • 2014
  • This kind of goal orientation in Art Nouveau has provided nature-friendly designs to modern people living in a post-industrial society. For these people who want to have their own style in a natural and comfortable space and take a break from daily hectic daily routines for a moment, hair-by-night styles were created by adding the images of Greek goddesses to the nature-friendly features of Art Nouveau patterns known as 'flower pattern', 'wave pattern', and 'vine pattern'. In terms of the scope of this paper, four designs (Eos, Hestia, Artemis and Demeter) were created by using Art Nouveau patterns which are connected with flowers in an organic manner based on Rene Lalique and Emile Galle patterns.

Temporal and Spatial Downregulation of Arabidopsis MET1 Activity Results in Global DNA Hypomethylation and Developmental Defects

  • Kim, Minhee;Ohr, Hyonhwa;Lee, Jee Woong;Hyun, Youbong;Fischer, Robert L.;Choi, Yeonhee
    • Molecules and Cells
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    • v.26 no.6
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    • pp.611-615
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    • 2008
  • DNA methylation is an epigenetic mechanism for gene silencing. In Arabidopsis, MET1 is the primary DNA methyltransferase that maintains CG DNA methylation. Plants having an overall reduction of MET1 activity, caused by a met1 mutation or a constitutively expressed MET1 antisense gene, display genome hypomethylation, inappropriate gene and transposon transcription, and developmental abnormalities. However, the effect of a transient reduction in MET1 activity caused by inhibiting MET1 expression in a restricted set of cells is not known. For this reason, we generated transgenic plants with a MET1 antisense gene fused to the DEMETER (DME) promoter (DME:MET1 a/s). Here we show that DME is expressed in leaf primordia, lateral root primoridia, in the region distal to the primary root apical meristem, which are regions that include proliferating cells. Endogenous MET1 expression was normal in organs where the DME:MET1 a/s was not expressed. Although DME promoter is active only in a small set of cells, these plants displayed global developmental abnormalities. Moreover, centromeric repeats were hypomethylated. The developmental defects were accumulated by the generations. Thus, not maintaining CG methylation in a small population of proliferating cells flanking the meristems causes global developmental and epigenetic abnormalities that cannot be rescued by restoring MET1 activity. These results suggest that during plant development there is little or no short-term molecular memory for reestablishing certain patterns of CG methylation that are maintained by MET1. Thus, continuous MET1 activity in dividing cells is essential for proper patterns of CG DNA methylation and development.

Environmental Adaptation of Tall Fescue varieties in Mauntainous pastures VI. Varietal Differences in seasonal produntion (Tall fescue 품종의 환경적응성 VI. 계절생산성의 품종간 차이)

  • 이주삼;한성윤;조익환
    • Journal of The Korean Society of Grassland and Forage Science
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    • v.14 no.3
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    • pp.195-200
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    • 1994
  • This experiment was undertaken to study the relationship between dry weight of plant(DW) and yield components. varietal differences in seasonal production at each of three cutting. and to classiQ them into some patterns of seasonal production in tall fescue varieties. The varieties examined were Barvetia. Fuego, Demeter. Safe, Barcel. Forager, Johnstone. Enforcer and Stef. The results obtained were as follows : 1. The Fuego and Barcel with high number of tiller per plant(NT) which had more dry wieght of plant(DW) than those of varieties with low number of tillers per plant(NT) at each cutting. 2. The dry weight of plant(DW) in 1st cutting indicated positive significant correlation with the number of tillers per plant(NT) and dry weight of a tiller(WT). But there was only positive correlation between the number of tillers per plant(NT) and dry weight of plant(DW) in 2nd and 3rd cutting. 3. Mean relative yield of each cutting were 3 1 %. 29.7% and 39.3% in 1st. 2nd and 3rd cutting, respectively. 4. Tall fescue varieties could be classified into 3 different seasonal growth patterns according to their mode of relative yield at each cutting. Barvetia, Fuego, Johnstone. Enforcer and Stef belong to the group of ABA with high relative yield in 1st and 3rd cutting. Demeter, Safe and Forager belong to the group of CBA with relative yield increased linearly up to 3rd cutting. And, Barcel belong to the group of BAB with high relative yield in 2nd cutting.

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Long-term Predictability for El Nino/La Nina using PNU/CME CGCM (PNU/CME CGCM을 이용한 엘니뇨/라니냐 장기 예측성 연구)

  • Jeong, Hye-In;Ahn, Joong-Bae
    • The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY
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    • v.12 no.3
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    • pp.170-177
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    • 2007
  • In this study, the long-term predictability of El Nino and La Nina events of Pusan National University Coupled General Circulation Model(PNU/CME CGCM) developed from a Research and Development Grant funded by Korea Meteorology Administration(KMA) was examined in terms of the correlation coefficients of the sea surface temperature between the model and observation and skill scores at the tropical Pacific. For the purpose, long-term global climate was hindcasted using PNU/CME CGCM for 12 months starting from April, July, October and January(APR RUN, JUL RUN, OCT RUN and JAN RUN, respectively) of each and every years between 1979 and 2004. Each 12-month hindcast consisted of 5 ensemble members. Relatively high correlation was maintained throughout the 12-month lead hindcasts at the equatorial Pacific for the four RUNs starting at different months. It is found that the predictability of our CGCM in forecasting equatorial SST anomalies is more pronounced within 6-month of lead time, in particular. For the assessment of model capability in predicting El Nino and La Nina, various skill scores such as Hit rates and False Alarm rate are calculated. According to the results, PNU/CME CGCM has a good predictability in forecasting warm and cold events, in spite of relatively poor capability in predicting normal state of equatorial Pacific. The predictability of our CGCM was also compared with those of other CGCMs participating DEMETER project. The comparative analysis also illustrated that our CGCM has reasonable long-term predictability comparable to the DEMETER participating CGCMs. As a conclusion, PNU/CME CGCM can predict El Nino and La Nina events at least 12 months ahead in terms of NIino 3.4 SST anomaly, showing much better predictability within 6-month of leading time.

Animal Welfare in Different Human Cultures, Traditions and Religious Faiths

  • Szucs, E.;Geers, R.;Jezierski, T.;Sossidou, E.N.;Broom, D.M.
    • Asian-Australasian Journal of Animal Sciences
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    • v.25 no.11
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    • pp.1499-1506
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    • 2012
  • Animal welfare has become a growing concern affecting acceptability of agricultural systems in many countries around the world. An earlier Judeo-Christian interpretation of the Bible (1982) that dominion over animals meant that any degree of exploitation was acceptable has changed for most people to mean that each person has responsibility for animal welfare. This view was evident in some ancient Greek writings and has parallels in Islamic teaching. A minority view of Christians, which is a widespread view of Jains, Buddhists and many Hindus, is that animals should not be used by humans as food or for other purposes. The commonest philosophical positions now, concerning how animals should be treated, are a blend of deontological and utilitarian approaches. Most people think that extremes of poor welfare in animals are unacceptable and that those who keep animals should strive for good welfare. Hence animal welfare science, which allows the evaluation of welfare, has developed rapidly.