• Title/Summary/Keyword: 수형

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Hierarchical Clustering Methodology for Source Code Plagiarism Detection (계층적 군집화 기법을 이용한 소스 코드 표절 검사)

  • Sohn, Ki-Rack;Moon, Seung-Mi
    • Journal of The Korean Association of Information Education
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    • 제11권1호
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    • pp.91-98
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    • 2007
  • Plagiarism is a serious problem in school education due to current technologies such as the internet and word processors. This paper presents how to detect source code plagiarism using similarity based on string comparison methods. The main contribution is to use hierarchical agglomerative clustering technique to classify plagiarism groups, which are then visualized as a dendrogram. Graders can set an empirical threshold to the dendrogram to navigate plagiarism groups. We evaluated the performance of the presented method with a real world data. The result showed the usefulness and applicability of this method.

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모바일음악콘텐츠 구매의도에 영향을 미치는 요인 연구

  • Yang, Seung-Gyu;Kim, Geon-A;Hwang, Seong-Hun;Lee, Jung-Jeong
    • 한국경영정보학회:학술대회논문집
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    • 한국경영정보학회 2007년도 International Conference
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    • pp.926-930
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    • 2007
  • 본 연구는 음악콘텐츠를 생산, 유통, 판매하는 기업의 입장에서 과연 소비자들의 어떤 인지요인들이 모바일음악콘텐츠 상품의 구매의도에 영향을 미치는지에 대해 초점을 맞추었다. 연구모델로는 모바일음악콘텐츠 상품을 정보기술이라는 측면에서 접근하고, 이러한 정보기술의 수용 요인을 추출하기 위하여 기술수형모형 (TAM: Technology Acceptance Model)을 주요 이론적 토대로 하였다. 또한, 구체적인 분석을 위해 모바일음악콘텐츠를 벨소리콘텐츠, 통화연결음콘텐츠, 음악 전곡 다운로드콘텐츠로 유형화하고, 각 분류에서의 구매의도에 영향을 미치는 요인을 분석하고자 온라인과 오프라인에서의 설문을 실시한 결과, 첫째, 회귀분석을 통해 벨소리콘텐츠 구매의도와의 관계를 검증하여 최종 도출된 요인들은 이용경력, 차별성, 편재성, 신뢰성, 보안성, 맞춤성, 사용편의 지각, 유용성 지각으로 나타났다. 둘째, 통화연결음콘텐츠 구매의도와의 관계인 경우 최종 도출된 요인들은 이용경력, 차별성, 편재성, 신뢰성, 보안성, 맞춤성, 사용편의 지각, 유용성 지각으로 나타났다. 셋째, 음악 전곡 다운로드콘텐츠 구매의도와의 관계인 경우 최종 도출된 요인들은 이용경력, 복제가능성, 신뢰성, 맞춤성, 사용편의 지각, 유용성 지각으로 나타났고, 이는 모바일음악콘텐츠의 유형에 따라 소비자의 구매의도에 끼치는 요인에 차이가 있음을 보여주고 특히 이동통신기기 특유의 콘텐츠와 일반음악콘텐츠의 경우 큰 차이를 구매의도와 독립변수간의 관계에서 보여주고 있다.

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Effect of Compost Application and Pruning method on Vine Growth, Fruit Quality and Vineyard Soil (퇴비시용과 전정 방법이 수체생육, 과실 품질 및 포도원 토양에 미치는 영향)

  • Lee, Jun-Bae;Ko, Kwang-Chool
    • Horticultural Science & Technology
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    • 제17권6호
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    • pp.753-754
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    • 1999
  • Application of compost to vineyards reduced nitrogen absorption into vine roots, increased soil nitrogen content, soil pH, soil organic matter, and fine roots density. Long pruning reduced the growth of 'Campbell Early' of Wakeman's training system. Maintaining proper vine shape was very difficult because long pruning decreased the vine growth. In conclusion, the application of compost to 'Campbell Early', 'Kyoho', 'Sheridan' vineyard decreased vine growth, increased soil organic matter, soil pH and favored the rhizosphere condition and the growth of fine roots increased.

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A Cost Analysis of the Heat Recovery Ventilator under Various Condition (열회수형 환기장치의 운전조건에 따른 경제성 평가에 관한 연구)

  • Kang, Tae-Wook;Koh, Jae-Yoon
    • Journal of the Korean Solar Energy Society
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    • 제26권1호
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    • pp.21-28
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    • 2006
  • Changes in building construction methods and repairing of older buildings have reduced infiltration rate. Synthetic materials, release airborne particles and uneven healthy odor are increased. For preventing pollutants introduce fresh outdoor air into the building, simply letting fresh outdoor air into building, however, Is not a cost-effective way to ventilation. When additional ventilation is added to an existing HVAC system, the heating and cooling equipment, often cannot handle the increased load. A HRV provides a way to minimize in energy costs while introducing fresh air to a building. In this study, the economical research of HRV, made of three types of materials, are conducted. Heat recovering characteristics are studied at seasonal outdoor air conditions based on the outdoor air property condition at, Seoul in 2002. As a results, the average sensible effectiveness is 0.75 in the sensible heat exchanger and average total effectiveness is 0.65 in the total heat exchanger. The pay back period of the sensible heat exchangers are $3.2{\sim}3.5$ year and it of total heat exchanger is 2.2 years.

Rotifera frm Korean Inland Waters V. Keratella and Notholca of Brachionidae (Rotifera: Monogononta) (한국 담수산 수형동물 V. Brachionidae의 2속 Keratella와 Notholca(Rotifera : Monogononta))

  • Chung Chung Eui;Yoo Hung Bin;Kim Seok Yee
    • Animal Systematics, Evolution and Diversity
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    • 제8권2호
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    • pp.211-222
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    • 1992
  • The systematic study of freshwater rotifers was conducted with the materials collected from 205 sites in South Korea. As a result, 4 subspecies, 3 from of Family Brachionidae (Keratella, Notholca) was identified; of which, 1 from is new to the Korean fauna: Keratella quadrata f. testudo. Total 135 species, 15 subspecies, 9 varieties and 10 forms representing 14 families 40 genera are now recorded from Korea by adding the 1 from newly described in the present paper.

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Development of 3-Dimensional Static Infinite Elements with Various Decay Characteristics for Tunnel Analysis (터널해석을 위한 다양한 감쇠특성의 3차원 정적무한요소 개발)

  • Koo, Hee-Dae;Koh, Hyun-Moo
    • KSCE Journal of Civil and Environmental Engineering Research
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    • 제26권3A호
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    • pp.439-445
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    • 2006
  • Analysis problems of tunnels whose geometrical dimensions are very small compared with surrounding media can be treated as infinite region problems. In such cases, even if finite element models can be applied, excessive number of elements is required to obtain satisfactory accuracy. However, inaccurate results may be produced due to assumed artificial boundary conditions. To solve these problems, a hybrid model, which models the region of interest with finite elements and the surrounding infinite media with infinite elements, is introduced for the analysis of infinite region. Three-dimensional isoparametric infinite elements with various decay characteristics are formulated in this paper and the corresponding parameters are presented by means of parametric studies. Three-dimensional tunnel analysis performed on a representative example verifies the applicability of hybrid model using infinite elements.

The Effect of Renewal Topworking on Early Y Shape Tree Formation and Yields in Peach Trees (고접갱신이 복숭아 Y자 수형 조기 구성 및 생산성에 미치는 영향)

  • Yoon, Ik Koo;Yun, Seok Kyu;Jun, Ji Hae;Nam, Eun Young;Kwon, Jung Hyun;Bae, Hae Jin;Chung, Kyeong Ho;Moon, Byung Woo
    • Journal of Bio-Environment Control
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    • 제22권4호
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    • pp.366-370
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    • 2013
  • The effects of the early tree shapes with renewal by top-working on Y-shaped peach tree, and the influence on the maintaining fruit quantity with gradual renewal of interstock cultivar were determined. In the comparison of the places of top-working tree, top working tree on the inside of the main branch of interstock cultivar had higher graft union rate and branch growth than those of top working tree on the outside. Tree width, basal diameter of shoot, and number of bearing shoots were smaller in top working tree than in replanted tree. Although labor time was not different to control top working tree and replanted tree, labor time was much required to manage top working tree with interstock cultivar. Accumulated fruit production was 2,384 kg/10a in top working tree and 2,025 kg/10a in replanted tree for three years. However, top working tree had no loss of fruits because interstock cultivar of top-working tree had 3,727 kg/10a of fruits. No variation on fruit quality was observed between top working tree and replanting tree. In terms of economic value of top-working tree, labor to manage interstock cultivar, fertilizer price, fruit bagging, and grading and packing price increased. However, fruit production increased, and price of seedling, rental equipment, pulling-out trees, and repairing supporting system decreased. Therefore, gradual renewal of topworking tree has effects on the maintaining fruit quantity, supplementation on fruit loss, and renewal cultivar.

Plant Species Utilization and Care Patterns Using Potted Plants in the Traditional Gardening (전통조경에서 분(盆)을 이용한 식물의 활용과 애호 행태)

  • Kim, Myung-Hee
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • 제31권3호
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    • pp.61-74
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    • 2013
  • This study examined and analyzed ancient writing and poetry regarding cases of appreciating plants by using pots in a garden of a palace or private houses by ancestors, and examined shape and planting method of plant species and potted plants, arrangement and preference of potted plants. As for the method of the study, description research method which examines and interprets poem and painting based on potted plants. The results of this study is summarized like the following. First, the plants which were favorably used for potted plants include 19 kinds such as Prunus mume, Pinus densiflora, Pinus pumila, Phyllostachys spp., Camellia japonica, Punica granatum, and Gardenia jasminoidesa, and as for herbs, 12 kinds such as Chrysanthemum monifolium and Nelumbo nusifera . Second, the species which were specially arranged into artificial shapes include Prunus mume and Pinus densiflora. The two plants made the shape of severe curves of stems such as Wangpi. Gyuban, and Bangan, and there are Pinus densiflora dwarfed potted plant whose roots are stretched on Prunus mume grafted into a strange stump and an oddly shaped stone. For the beauty of the dwarfed tree shape, pine cones are added to an old Pinus densiflora or Parthenocissus tricuspidata is planted to stems, and additional method of making moss on the soil, which is called 'Jongbunchuigyeong'. As for planting method, water culture, planting on a stone, planting on a charcoal, and assembled planting are expressed in poetry. Third, as for external space for potted plants, a place where a king stays, a bed room for a king, surrounding areas and gardens of private houses, and step stones were used as a space which adds artistic effects. Potted plants are placed on a table in a library, on a desk, on a drawer, and near a pillow as a small items in a room, and scholars enjoyed original characteristics and symbolism of the potted plants. Fourth, at the time of flowering of Prunus mume, poetry event was held to enjoy the tree and writing poetry begun. And at the time of flowering of Chrysanthemum monifolium, the flowers were floated in a liquor glass or shadow play was enjoyed. Fifth, potted plants played the role of garden ornaments in elegant events of a palace, the gentry, wedding ceremony, and sacrificial rites. Sixth, potted plants were used as tributes between countries, donation to a king, or a gift of a king. In addition, there were many cases where scholars exchanged potted plants and there is the first record of giving a potted plant in 'Mokeunsigo' by Mokeun Isaek, scholar in the late era of Goryeo. Seventh, at the time of flowering Prunus mume, Chrysanthemum monifolium, Gardenia jasminoides, Nelumbo nusifera, and Narcissustazetta var. chinensis, they enjoyed the particular fragrance and express it into poetry. Eighth, plant species from southern parts such as Camellia japonica, Daphne odora, Gardenia jasminoides, Citrus unshiu, Phyllostachys spp., Punica granatum, Rosa rugosa, and Musa basjoo, or foreign plant species, and species weak against the cold were utilized as pot plants for enjoying green trees indoors in northern central province in harshly cold winter.

Agronomic Characteristics of Sorghum × Sudangrass Hybrids 'Cadan 99B' and 'Sweet Sioux WMR' in Middle and Southern Region of Korea (중부 및 남부지역에서의 수수 × 수단그라스 교잡종 'Cadan 99B' 및 'Sweet Sioux WMR' 품종특성)

  • Hwang, Tae-Young;Ji, Hee Chung;Kim, Ki Yong;Lee, Sang-Hoon;Lee, Ki-Won;Kim, Ki-Su;Choi, Gi Jun
    • Journal of The Korean Society of Grassland and Forage Science
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    • 제37권4호
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    • pp.254-263
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    • 2017
  • This study was carried out to introduce of agronomic characteristics, forage yields and quality of Sorghum ${\times}$ Sudangrass hybrids 'Cadan 99B' and 'Sweet Sioux WMR' from 2015 to 2016 in middle and southern regions of Korea. The field experiment design was complete in seven varieties with three repetitions. Sorghum ${\times}$ Sudangrass hybrids were sown on mid-May in middle region, and end-May in southern region of Korea, in 2015 and 2016. The observed average heading date of Cadan 99B and Sweet Sioux WMR were July 22. The heading dates of Cadan 99B and Sweet Sioux WMR were 8 days earlier than SX-17 and 5 days earlier than brown mid-rid (BMR) Revolution. The sugar contents of Cadan 99B and Sweet Sioux WMR were 6.5 and $6.9Brix^{\circ}$, respectively. Comparison with BMR variety, the sugar contents of Candan 99B and Sweet Sioux WMR were 0.2 and $0.6Brix^{\circ}$ higher than Revolution, respectively. The average of dry matter (DM) yield for 2 years and 2 regions of Cadan 99B (24,587kg/ha) were the highest among the seven varieties, but there was no significant difference among other varieties except headless control variety Jumbo (19,119kg/ha) and LATTE (20,778kg/ha) (p>0.05). The crude protein (CP) and in vitro dry matter digestibility (IVDMD) of Cadan 99B were 7.5% and 60.2%, and Sweet Sioux WMR were 6.9% and 60.7%, respectively. The results of this study indicated that Sorghum ${\times}$ Sudangrass hybrids Cadan 99B and Sweet Sioux WMR are earlier heading dates and higher than SX-17, and high yields of DM in middle and southern regions of Korea.