• Proceedings of the Korea Information Processing Society Conference
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• 2020.11a
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• pp.538-541
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• 2020

코로나 19 팬데믹 상황으로 언택트 콘텐츠에 대한 수요가 증가하고 있다. 그러나 실외 스포츠를 실내에서 즐기기에는 한계가 존재한다. 본 연구에서는 증강현실과 스마트 밴드를 이용하여 실감형 로잉머신 AR 헬스 케어 콘텐츠를 개발하였다. 스마트 밴드를 이용하여 사용자의 운동 데이터를 전달하고, 이 데이터를 바탕으로 증강현실을 이용하여 실내에서도 실감형 콘텐츠를 즐길 수 있게 설계하였다. 이러한 결과는 스마트 밴드를 이용한 AR 헬스 케어 시장의 가능성을 제시한다.

• Journal of Korean Society of Forest Science
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• v.90 no.4
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• pp.548-557
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• 2001

This study was carried out to classify forest vegetation of Mt. Myeonsan with phytosociological analysis of ZM School and to explain community types with CCA ordination. The research sites were located in the northern part of Kyungsangpook-Do area and in the southern part of Kangwon-Do. The 73 plots were investigated in the study areas which were including 291 plant species. The forest vegetation was classified into Quercus mongolica community group, Juglans mandshurica community group, and Larix leptolepis plantation. Q. mongolica community group was divided into 9 communities such as Rhododendron schlippenbachii community, Symplocos paniculata community, Pinus densiflora community, Betula schmidtii community, Fraxinus rhynchophylla community, Populus davidiana community, Tilia amurensis community, Betula costata community and Betula davurica community. J. mandshurica community group was divided into 5 communities and 4 groups such as Acer mono community (subdivided into Quercus serrata group and typical group), Fraxinus mandshurica community, Ulmus laciniata community (subdivided into typical group and Ribes mandshuricum group), Malus baccata community and Carpinus laxiflora community. And it was entirely classified into 17 vegetation units. According to CCA, Q. mongolica community group showed high positive correlation to topography, altitude and slope degree, and J. mandshurica community group showed high positive correlation to bare rock. However, L. leptolepis community group was not significantly ordinated with the gradient of environmental factors. And in correlation of axes, important environmental variables were topography and altitude.

• Journal of Korean Society of Forest Science
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• v.97 no.6
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• pp.597-604
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• 2008

Recognizing the necessity of the development of ecologically sound silvicultural system for the mature Korean pine (Pinus koraiensis), this study was carried out to examine the invasion and growth of understory vegetation after partial cutting. In 1997, the age class VII Korean pine forest in the Experimental Forest of Kangwon National University was opened up about 50% by modified shelterwood cutting with site preparation to induce succeeding regenerations. After 10 years, plenty of hardwood have come to the stand, forming understory vegetation. The abundance and composition of understory vegetation was periodically investigated in the ten $10m{\times}10m$ permanent sample plots, estimating importance values, species diversity index and the distribution of diameter and height of the understory vegetation. Encouraged by canopy opening, the coverage of understory reached perfect closure, composed of 22 tree species and 20 shrub species in 2007. Morus bombycis occupied 29.6% of the total importance value and Cornus controversa was 17.0%, followed by Styrax obassia, Quercus aliena, Quercus mongolica, Acer mono, and Pinus koraiensis. In the year of 2000 the species diversity was highest as 2.547 with 26 tree species and deceasing thereafter, showing 2.220 with 22 tree species in 2007. As understory layer was thickly covered and got grow bigger, some shade intolerant species were disappeared, lowering species diversity. In 2007 the biggest tree was a Quercus aliena with 11.3 cm of DBH and the tallest tree was a Cornus controversa with 9.8m of height. The frequency distribution of number of trees by diameter and height classes formed the inverted-J-shaped curve, supposed to be typical uneven-aged stand.

• Korean Journal of Environment and Ecology
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• v.21 no.5
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• pp.379-389
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• 2007

This study was carried out to classify forest vegetation structure of Mt. Gaya from April to October in 2006 using phytosociological analysis methodology of Z-M schools. One hundred study sites(quadrat) were surveyed in the area. The forest vegetation was classified into 3 community groups such as Pinus densiflora community group, Cornus controversa community group and artificial forest group. P, densiflora community group was subdivided into 4 communities such as Rhododendron schlippenbachii community. Salix gracilistyla community, Meliosma oldhamii community and P. densiflora typical community. R. schlippendbachii community was subdivided into Potentilla dickinsii group(subdivided into Carpinus coreana subgroup and Melandrynum firmum subgroup) and R. schlippenbachiitypical group. Cornus controversa community group was also subdivided into 4 communities such as Hovenia dulcis community, Quercus aliena community, Ribes maximowicianum community and C. controversa typical community. Artificial forest type indicated 3 communities such as Larix leptolepis community, Pinus rigida community and Castanea crenata community. Accordingly, the vegetation pattern of the surveyed areas were classified into 3 community groups, 11 communities, 2 groups, and 2 subgroups and the forest vegetation was classified into 13 units in total. It is also believed that C. coreana subgroup and M. oldhamii community could be a source for a significant basic data for making vegetation hierarchy and forest distribution zone in the Korean peninsula. H. dulcis community was also considered to be one of the important genetic resources; therefore, those distribution areas are required to be institutionally protected and managed in the near future.

• Journal of Korean Society of Water and Wastewater
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• v.22 no.5
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• pp.517-522
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• 2008

This study aims at an assessment of the effectiveness of taste & odor removal and transmembrane pressure changes in a pilot membrane plant(500m3/day) by adding PAC to MF process, and at providing a basis for applying it to the advanced water treatment process. The transmembrane pressure showed, in low turbidity of raw water, a tendency to decrease when PAC was injected at the Flux of 1, $1.5m^3/m^2{\cdot}d$, while it increased in high Flux($1.5m^3/m^2{\cdot}d$) in high turbidity of raw water. in addtion, it is shown that the fouling could be reduced more when PAC is injected together with appropriate amount of coagulant, than when PAC is solely injected. Taste & Odor-causing 2-MIB may not be detected in membrane filtered water, if the amount of PAC injection is increased in accordance with the increasing concentration of 2-MIB. Hence, PAC injection, as a pre-treatment process in MF membrane filtering, is supposed to be a suitable process for reducing fouling as well as for improvement effectiveness of taste & odor treatment.

• Journal of Environmental Science International
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• v.10 no.4
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• pp.259-267
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• 2001

Investigations were carried out to observe the seasonal succession of phytoplankton, and viable counts of bacteria from the mid to lower reaches of Nakdong Fiver. An intensive monitoring was conducted from May to December 1999 biweekly at 6 sites in a main channel and 3 tributaries. Although there are several sites with high nutrient loading from the basin, all of study sites showed mesotrophic states owing to high discharge(June~September). Relatively low algal biomass and CFUs(mean of chi. a, $12.3{\pm}$11.5 $\mu\textrm{g}${\el}l$, CFUs : 1.8${\times}10^7$) were observed during the rainy season. The diatom population was dominant(over 85% of total community) year-long with peaks(Stephanodiscus hantzchii) in the fall and winter. Dominance of blue-green algal groups during the summer was not observed in the summer. Microorganisms peaked in the summer and fall(June~September), affected mainly by the inputs of phytoplankton and nutrients. Biomass of phytoplankton and CFU counts were higher in the Kumho River than other tributaries and main channel.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2009.11a
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• pp.103-106
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• 2009

요즘 사람들이 인체에 대하여 많은 관심을 가지고 있다. 그러면서 나의 몸에 작은 변화가 일어 났을 때 나의 신체는 어떻게 변할 것인가에 대한 궁금증이 생기게 되었다. 인체의 변화는 많은 사람들 마다 조금씩 차이는 있겠지만 비슷한 변화를 있을 것이라고 추측 하였다. 일반 사람들에게 정보를 제공하기 위해서는 서비스하는 데이터가 통계적 검증 절차를 받아야 하는 관계로 일반적으로 많은 실험을 통해 얻어진 데이터들을 보여주도록 하였다. 본 시스템 에서는 인체모형 중 남자 머리 구조를 시각화 하여 심리/생리, 음향/음성 에 따른 머리의 변화되는 모습을 보여주도록 하였다. 또 머리를 구조화 하여 시뮬레이션 할 수 있는 공간을 제공하여 방문한 사람들이 이용하기 쉽고 뚜렷한 데이터를 서비스 하였다. 그리하여 전문가, 학생 또는 일반 사람들이 인체 변화에 대한 궁금한 점을 최대한 해결 할 수 있도록 해준다.

• Korean Journal of Environment and Ecology
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• v.19 no.4
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• pp.358-366
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• 2005

This study was carried out through the analysis of the actual vegetation types and characteristics in Baengma Urban Natural Park, Incheon to accumulate basic data for the forest vegetation management. The actual vegetation was classified into 39 types. Area of Robinia pseudoa-cacia forest was the widest($34.0\%$) in the afforested vegetation types, while Quercus monglica forest occupied the widest area($12.1\%$) in the natural vegetation types. The map of actual vegetation characteristics was drawn on the basis of stratum structure, plant development tendency and environmental condition of the actual vegetation types. We reclassified it into 16 types and proposed the management plan.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.7 no.6
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• pp.70-80
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• 2008

This paper presents comparison of 18000-3 ASK and PJM mode RFID in terms of reading speed. This is accomplished by counting the occurrences of a few representative blocks which constitute the reader / tag interactions for each mode. To apply FS (frame slotted)-aloha protocol, four Q-algorithms, which are a Q-algorithm suggested in the standard document, a fixed Q-algorithm, a minimum Q-algorithm and the number of tag dependent Q-algorithm, are used. Through some simulations, we present the reading speed of each mode with respect to the Q-algorithm and the comparison of the reading speed between the two modes for each Q-algorithms.

• The Journal of the Korea Contents Association
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• v.14 no.4
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• pp.267-276
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• 2014

The purpose of the study is to examine the influence of family stress on family adaptation and investigate the mediating effect of family strength on the association between family stress and family adaptation of disabled family. As a result, family stress bas also been from multiple regression analysis revealed that family stress has a significant effect on family adaptation through family strength. Family strength is found to have a full mediation effect. In summary, the findings suggest that disabled family with higher levels of family stress are more likely to have lower family strength and lower family strength decreases the probability of conducting family adaptation. Based on these results, the researchers suggest intervention strategies that could prevent family stress, family strength and family adaptation.