• Title/Summary/Keyword: Suitability Model

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Study on Ecological Instream Flow Estimation using River2D Model in the Seomjin River (River2D 모델을 이용한 섬진강의 생태유지유량 산정에 관한 연구)

  • Roh, Kyong-Bum;Park, Sung-Chun;Jin, Young-Hoon;Park, Myoung-Ok
    • Journal of Korean Society on Water Environment
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    • v.27 no.6
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    • pp.822-829
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    • 2011
  • The purpose of the present study is to estimate the ecological instream flow for conservation and restoration of fish habitat in running water ecosystem which has very important status for stream environment. Estimation of the ecological instream flow in the present study was carried out by application of a two-dimensional depth averaged model of river hydrodynamics, River2D model. It can model fish habitat in natural streams and rivers and assess the quality of physical habitat accoriding to the species preferences for habitat suitability. Zacco platypus and Zacco temmincki were selected as target fish species in the study area of the Seomjin river. The Habitat Suitability Criteria (HSC) developed by Sung et al. (2005) were used for target fish species, life stages and habitat conditions in the study. Weighted usable area (WUA) was computed by the River2D model considering preferences of target fish species for velocity, depth, and channel substrate. The result revealed that the ecological instream flow of $10.0m^3/s$ is needed to maintain the target fish habitat at each life stage in the river.

A Study on the Land Suitability Analysis Based on Site Selection Variables using Macro Language (매크로 언어를 이용한 입지인자 변수조정에 따른 토지적합성 분석에 관한 연구)

  • Yi, Gi-Chul
    • Journal of the Korean Association of Geographic Information Studies
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    • v.6 no.1
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    • pp.59-77
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    • 2003
  • This study is to validate the use of macro language for the land suitability analysis aiming to help to resolve land use conflicts. The silver-town suitability analysis is conducted on the Geejang Gun, Busan Metropolitan city. Such digital maps as terrain, road, facility, and water body were created for various cartographic models. A cartographic model identified the best suitable areas for silver-town development based on the such site selection variables as a distance to facility and road, slope and aspect of terrain, land use etc. Then, the other cartographic model identified the most favorable site among the candidate sites based on the comparison of the aspect of proximity, usage and environmental quality. Macro language was used for these modeling process and was used for the manipulation of all these spatial variables used in the models to resolve land use conflicts relating to the decision making process of the final site selection. This study will improve the effectiveness and rationality of the traditional site suitability analysis.

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Assessing the Climatic Suitability for the Drywood Termite, Cryptotermes domesticus Haviland (Blattodea: Kalotermitidae), in South Korea (마른나무흰개미(가칭)의 국내 기후적합성 평가)

  • Min-Jung Kim;Jun-Gi Lee;Youngwoo Nam ;Yonghwan Park
    • Korean journal of applied entomology
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    • v.62 no.3
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    • pp.215-220
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    • 2023
  • A recent discovery of drywood termites (Cryptotermes domesticus) in a residential facility in Seoul has raised significant concern. This exotic insect species, which can damage timber and wooden buildings, necessitates an immediate investigation of potential infestation. In this study, we assessed the climatic suitability for this termite species using a species distribution modeling approach. Global distribution data and bioclimatic variables were compiled from published sources, and predictive models for climatic suitability were developed using four modeling algorithms. An ensemble prediction was made based on the mean occurrence probability derived from the individual models. The final model suggested that this species could potentially establish itself in tropical coastal regions. While the climatic suitability in South Korea was generally found to be low, a careful investigation is still warranted due to the potential risk of colonization and establishment of this species.

A Design of University Information System Operation Audit Model based on ITIL V3

  • Kim, Hee-Wan;Kang, Bo-Ra;Kim, Dong-Soo;Moon, Song-Chul
    • Journal of Information Technology Applications and Management
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    • v.25 no.3
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    • pp.29-41
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    • 2018
  • The purpose of constructing university information system is for improvement in diversification and throughput of information, streamlines business processes, rapid exchange of information, sharing of information, decision-making information, and securing educational facilities. Similar to business information technology system, university information system does not have a review system for sharing and overlapping investment of information. Due to the lack of project management for outsourcing and vulnerability of system suitability, system audit is absolutely needed for the university information system. This paper especially focuses on an operational phase in the audit of university information system. Additionally, we proposed operating model and checklists of the university information system based on Management Guidelines of ITIL V3 Operational and Information System. We derived the checklists of operation audit by each domain of service strategy, service design, service transition, service operation, and continual service improvement. As the result, this study appear to have more than average satisfaction the suitability results were.

The Impact of Virtual Influencer Formativeness on Advertising Attention and Attitude Toward Advertising: The Dual Parallel Mediating Effects of Attractiveness and Suitability (버츄얼 인플루언서의 조형성이 광고 주목도와 광고 태도에 미치는 영향: 매력성과 적합성의 병렬 이중 매개효과)

  • Eun Hee Kim;No-Mi Lee
    • Journal of Advanced Technology Convergence
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    • v.3 no.1
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    • pp.21-31
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    • 2024
  • The study confirmed the relationship between attractiveness and suitability in the relationship between the formativeness of creating the artistic form of a virtual influencer who acts as an advertising model, advertising attention, and advertising attitude. To confirm this, the subjects of the study were the MZ generation and X generation, which have a high rate of SNS use. The analysis method used SPSS statistics 27.0 and SPSS process macro version. The research results are as follows. First, it was confirmed that attractiveness and suitability fully mediate the relationship between formativeness and advertising attention. In the path of formativeness and advertising attention, the total effect was found to be higher than the direct effect, and it was confirmed that there was a double parallel mediation effect through attractiveness and suitability in the relationship between the formativeness of virtual influencers and advertising attention. Second, it was confirmed that formativeness affects the mediating variable, attractiveness, but attractiveness does not affect attitude toward advertising. Since formativeness affects suitability and suitability in turn influences attitude toward advertising, it was confirmed that there is a full mediating effect between these variables. According to these results, the parallel mediating effect of attractiveness and formativeness was not confirmed in the relationship between formativeness and attitude towards advertising. The above study is significant in that it presents academic implications and practical implications by examining the dual and parallel mediating effects of attractiveness and suitability in the relationship between formativeness, advertising attention, and advertising attitude variables, which are considered in the production of virtual influencers.

Testing a Middle-Range Theory of Self-Care of Chronic Illness: A Validation for Korean Adult Patients with Severe Hypertension (만성질환 자가간호 중범위이론 검증: 성인 중증고혈압환자를 대상으로)

  • Gil, Eunha;Oh, Heeyoung
    • Journal of Korean Academy of Nursing
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    • v.48 no.5
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    • pp.521-533
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    • 2018
  • Purpose: The aims of this study are to provide a theoretical framework for improving the self-care of adults with severe hypertension and to examine the practical suitability of a middle-range theory of self-care for chronic illness by validating the structural model. Methods: Data were collected at a university hospital in D metropolitan city from July 1 to August 14, 2015. A total of 224 Korean adult patients with severe hypertension were recruited. Data were analyzed using SPSS 22.0 and AMOS 22.0. Results: The results show that the fit index of the hypothetical model meets the recommended level; 7 out of 8 hypothetical model paths were statistically significant. Motivation, self-efficacy, support from others, and accessibility to care showed statistical significance and explained 67.3% of the self-care process. The self-care process explained 45.3%, 63.6%, and 26.5% of quality of life, health, and illness stability, respectively. Conclusion: This model can be used as a theoretical framework for improving self-care among adult Korean patients with severe hypertension. Moreover, the practical suitability and validity of the middle-range theory of self-care for chronic illness is secured.

Modeling the Spatial Distribution of Black-Necked Cranes in Ladakh Using Maximum Entropy

  • Meenakshi Chauhan;Randeep Singh;Puneet Pandey
    • Proceedings of the National Institute of Ecology of the Republic of Korea
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    • v.4 no.2
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    • pp.79-85
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    • 2023
  • The Tibetan Plateau is home to the only alpine crane species, the black-necked crane (Grus nigricollis). Conservation efforts are severely hampered by a lack of knowledge on the spatial distribution and breeding habitats of this species. The ecological niche modeling framework used to predict the spatial distribution of this species, based on the maximum entropy and occurrence record data, allowed us to generate a species-specific spatial distribution map in Ladakh, Trans-Himalaya, India. The model was created by assimilating species occurrence data from 486 geographical sites with 24 topographic and bioclimatic variables. Fourteen variables helped forecast the distribution of black-necked cranes by 96.2%. The area under the curve score for the model training data was high (0.98), indicating the accuracy and predictive performance of the model. Of the total study area, the areas with high and moderate habitat suitability for black-necked cranes were anticipated to be 8,156 km2 and 6,759 km2, respectively. The area with high habitat suitability within the protected areas was 5,335 km2. The spatial distribution predicted using our model showed that the majority of speculated conservation areas bordered the existing protected areas of the Changthang Wildlife Sanctuary. Hence, we believe, that by increasing the current study area, we can account for these gaps in conservation areas, more effectively.

Simulation Model of 7 Phase BLDC Motor Drives with Phase Angle Control (진상각을 갖는 7상 BLDC 전동기의 시뮬레이션 모델)

  • Kim, Hyun-Cheol;Oh, Hyung-Sik;Kim, Jang-Mok;Kim, Cheul-U
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.56 no.12
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    • pp.2127-2134
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    • 2007
  • The simulation model has been already developed not for 7 phase but for 3 phase BLDC motor. It is necessary to develop a new simulation model of multi-phase BLDC motor including the phase delay angle especially in the high speed region. In this paper, the suitability of the proposed model is verified through the several computer simulations, and experimented results.

A Study of the Analysis of Water Tank Suitability for Forest Fire Extinction using Geographic Information System (GIS를 이용한 산불 진화용 저수탱크 적지 분석에 관한 연구)

  • Yi, Gi-Chul;Kim, Seung-Hwan;Nam, Jung-Chil;Park, Sung-Burm;Kang, Young-Jo;Ok, JinA
    • Journal of the Korean Association of Geographic Information Studies
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    • v.1 no.2
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    • pp.1-13
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    • 1998
  • The objective of this paper is to develop a cartographic model for water tank suitability for small forest fire extinction using GIS. Various digital maps were created using CAD & GIS for Amnam urban park, which is located in Seogu, Pusan city. The park had 4 small water tanks for fire extinction. The developed descriptive cartographic model identified the spatial effects of fire extinction due to the existing facilities. The prescriptive model to enhance spatial effects was developed for the determination and comparison of the effects of forest fire extinction due to the proposed facilities. This paper proved the techniques of GIS and cartographic modelling are significant for the suitability analysis of water tanks for small forest fire extinction.

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