• The Plant Pathology Journal
• /
• 제35권5호
• /
• pp.459-472
• /
• 2019

The increasing variation in climatic conditions under climate change directly influences plant-microbe interactions. To account for as many variables as possible that may play critical roles in such interactions, the use of an integrated modeling approach is necessary. Here, we report for the first time a local impact assessment and adaptation study of future epidemics of kiwifruit bacterial blossom blight (KBB) in Jeonnam province, Korea, using an integrated modeling approach. This study included a series of models that integrated both the phenological responses of kiwifruit and the epidemiological responses of KBB to climatic factors with a 1 km resolution, under the RCP8.5 climate change scenario. Our results indicate that the area suitable for kiwifruit cultivation in Jeonnam province will increase and that the flowering date of kiwifruit will occur increasingly earlier, mainly due to the warming climate. Future epidemics of KBB during the predicted flowering periods were estimated using the Pss-KBB Risk Model over the predicted suitable cultivation regions, and we found location-specific, periodic outbreaks of KBB in the province through 2100. Here, we further suggest a potential, scientifically-informed, long-term adaptation strategy using a cultivar of kiwifruit with a different maturity period to relieve the pressures of future KBB risk. Our results clearly show one of the possible options for a local impact assessment and adaptation study using multiple models in an integrated way.

• 한국수자원학회논문집
• /
• 제55권4호
• /
• pp.309-319
• /
• 2022

기후변화 적응전략 수립에 있어 정책적 패러다임이 과거 구조적 대책에서 위험관리로 변화하고 있으며, 지역 내 다양한 이해관계자의 참여와 협력을 바탕으로 하는 수자원 거버넌스의 구축은 기후변화 적응전략 마련의 핵심이라고 할 수 있다. 본 연구에서는 국내 및 OECD 주요국들의 물관리 정책과 수자원 거버넌스의 발전 과정 및 현황을 검토하여 국내 수자원 거버넌스의 한계점을 파악하고, 효과적인 기후변화 적응을 위한 국내 수자원 거버넌스의 개선방안을 모색하고자 한다.

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2023년도 춘계학술발표대회
• /
• pp.377-379
• /
• 2023

Concept drift detection on data stream is the major issue to maintain the performance of the machine learning model. Since the online stream is to be a function of time, the classical statistic methods are hard to apply. In particular case of seasonal time series, a novel window strategy with Fourier analysis however, gives a chance to adapt the classical methods on the series. We explore the KS-test for an adaptation of the periodic time series and show that this strategy handles a complicate time series as an ordinary tabular dataset. We verify that the detection with the strategy takes the second place in time delay and shows the best performance in false alarm rate and detection accuracy comparing to that of arbitrary window sizes.

• 통상정보연구
• /
• 제16권4호
• /
• pp.103-123
• /
• 2014

수출성과는 수출마케팅 연구의 핵심적인 주제이다. 본 연구는 기업이 해외 수출시장전략으로 선택한 적응화 전략과 표준화 전략이 실제로 마케팅 변수에 실행된 수준과 그 결과 획득된 수출성과 사이에 어떤 상관성이 있는지를 탐구함으로써 적응화와 표준화의 전략적 활용성을 높이는데 도움을 주고자 하였다. 본 연구의 실증분석은 우리나라 수출시장으로 진출하고 있는 뉴질랜드의 수출기업을 대상으로 하였다. 적응화와 표준화는 전략 실행의 정도와 수준을 의미하는 연속적인 개념으로 각각 강점과 약점을 가지고 있다. 실증분석 결과 적응화 전략의 경우 수출성과(만족과 불만족한 수출사업)의 차이는 제품 변수보다는 가격, 장소, 촉진 변수에서 유의미하게 나타난 반면, 표준화 전략의 경우 가격, 장소, 촉진 변수보다는 제품 변수에서 수출성과의 차이가 발견되었다. 이는 기업이 해외 수출시장을 공략할 때 제품 변수는 표준화 노력을 그리고 가격, 장소, 촉진 변수는 적응화의 노력을 기울일 때 만족한 수출성과를 얻게 될 가능성이 높다는 점을 시사해주고 있다.

• 대한간호학회지
• /
• 제20권1호
• /
• pp.50-60
• /
• 1990

The purpose of this study was to investigate factors influencing role adaptation in newly employed nurses and the consistency between role expectations before employment and after one year of employment. The results of this study may contribute to strategy development towards positive role adaptation in newly employed nurses. The data used in this study were collected from 111 nurses, the sample was drawn from all newly employed professional nurses working at Y Medical Center in 1987. The data were collected longitudinally in the 2nd - 3rd weeks, the 3rd month and the 12th month after employment. The results of this study were as follows : 1. The degree of change the importance of factors influencing role adaptation and the length of time after employment were investigated. the result showed that the degree of change was the greatest within the first 3 months after employment. Important factors related to role adaptation were working conditions, the environment of the assigned ward and the work load. These factors always displayed high scores without any great change over time. New employees put more importance on practical factors which were obtained through experience in their jobs rather than on ideal factors Which they had considered more important while in school. 2. Consistency between role expectation before employment and after 12 month of employment was investigated. The highest consintency item was the expectation about the variety of Patients, and the highest inconsistency was the expectation about their own welfare. An average score of 69.07 points was achieved from a maximum of 125 points for the 25 items. showing that expectations for role development before employment were not fully satisfied. In conclusion the administraor should assess the initial expectation at the time of employment of new nurses and she / he should make clear to the new nurses that these expectations may not be realistic. In this way the administrator can provide more satisfactory conditions towards the expectations of the new nurses and help them towards positive role adaptation and reduction of role conflict. Newly employed nurses have high and unrealistic expectations about socialization to the profession from their nursing educational program. It is suggested that a transitional training program should be planned and carried out for newly employed nurses.

• 한국심리학회지 : 문화 및 사회문제
• /
• 제11권2호
• /
• pp.1-29
• /
• 2005

본 연구에서는 사회적 불안이 개인의 심리적 적응에 미치는 영향을 살펴보았다. 사회적 불안을 더 많이 느끼는 사람들이 적게 느끼는 사람들에 비하여 걱정증상과 신경증 수준이 높았고 삶의 만족도와 심리적 안녕감 수준은 낮았다. 사회적 불안의 하위 영역과 하위 차원 중 심리적 적응도를 예언하는 영역이나 차원이 무엇인지를 알아보았다. 부정적 적응은 주로 개인불안에 의해 유발되는 반면, 긍정적인 적응은 개인불안과 함께, 공정성불안과 미래불안에 의해 예측되었다. 또한 사회적 불안 하위 차원 중에서는 상황을 염려하여 사람들이 느끼는 불안인 예견불안이 긍정적, 부정적 적응도를 유의하게 예언하였다. 사회적 불안과 최근 발생한 응답자들의 행동이나 생각 변화와의 관계를 분석한 결과, 사회적 불안이 높은 응답자일수록 최근 공격반응이나 포기반응을 더 자주 하였다. 특히 공격반응의 경우 개인불안이 유의한 예측변수로 나타났으며, 포기반응의 경우에는 정치불안과 사회문제불안이 유의한 예언변수로 나타났다. 사회적 불안차원 중에서 공격과 포기반응을 예측하는 변인은 예견불안이었다. 마지막으로 사회적 불안에 대한 스트레스 대처방식을 살펴본 결과, 응답자들은 전반적으로 문제해결적 대처방식을 많이 사용하고 있었다. 그러나 사회적 불안 수준이 높은 사람들이 사회적 불안이 낮은 사람들에 비하여 소망적 사고를 많이 하고 있었고, 특히, 안전불안과 정치불안을 많이 느끼는 사람일수록 소망적 사고를 많이 하였다. 반면에 반응불안이 높은 사람은 문제 회피적인 스트레스 대처방식을 많이 사용하고 있었다.

• 제어로봇시스템학회논문지
• /
• 제6권12호
• /
• pp.1079-1085
• /
• 2000

In this paper, we propose a method of cooperative control (T-cell modeling) and selection of group behavior strategy (B-cell modeling) based on immune system in distributed autonomous robotic system (DARS). An immune system is the living bodys self-protection and self-maintenance system. these features can be applied to decision making of the optimal swarm behavior in a dynamically changing environment. For applying immune system to DARS, a robot is regarded as a B-cell, each environmental condition as an antigen, a behavior strategy as an antibody, and control parameter as a T-cell, respectively. When the environmental condition (antigen) changes, a robot selects an appropriate behavior strategy (antibody). And its behavior strategy is stimulated and suppressed by other robots using communication (immune network). Finally, much stimulated strategy is adopted as a swarm behavior strategy. This control scheme is based on clonal selection and immune network hypothesis, and it is used for decision making of the optimal swarm strategy. Adaptation ability of the robot is enhanced by adding T-cell model as a control parameter in dynamic environments.

• 한국지능시스템학회논문지
• /
• 제11권7호
• /
• pp.591-597
• /
• 2001

In this paper, we propose a method of cooperative control (T-cell modeling) and selection of group behavior strategy (B-cell modeling) based on immune system in distributed autonomous robotic system (DARS). Immune system is living body's self-protection and self-maintenance system. These features can be applied to decision making of optimal swarm behavior in dynamically changing environment. For applying immune system to DARS, a robot is regarded as a B-cell, each environmental condition as an antigen, a behavior strategy as an antibody and control parameter as a T-cell respectively. The executing process of proposed method is as follows. When the environmental condition changes, a robot selects an appropriate behavior strategy. And its behavior strategy is stimulated and suppressed by other robot using communication. Finally much stimulated strategy is adopted as a swarm behavior strategy. This control school is based on clonal selection and idiotopic network hypothesis. And it is used for decision making of optimal swarm strategy. By T-cell modeling, adaptation ability of robot is enhanced in dynamic environments.

• ALGAE
• /
• 제25권1호
• /
• pp.27-35
• /
• 2010

Marked declines in seagrass meadows are increasingly being reported from coasts around Korea and many regions of the world. The transplantation of seagrasses has been attempted to mitigate and control their degradation from a range of anthropogenic factors. In this study, Zostera marina shoots, which were collected from a donor bed in Koje Bay, were transplanted in Jindong Bay in December 2004. In 2008, a comparative investigation of shoot morphology, growth, and reproduction strategy of Z. marina was carried out between the donor and transplant sites to assess their adaptation success. Shoot height, individual shoot weight, and leaf productivity at the transplant site were significantly greater than those at the donor site. However, below-/aboveground tissue ratio was significantly lower at the transplant site compared to the donor site. Z. marina survival was maintained through vegetative reproduction, while peak season for lateral shoot recruitment was late winter for both donor and transplant site populations. However, vegetative reproduction mainly occurred during late winter and spring at the transplant site, whereas lateral shoots were evident across all seasons except late spring in the donor site. More pronounced seasonal variations were found at the transplant site compared to the donor site. These results indicate that Z. marina populations at the two sites possess distinct phenotypic variations induced by different environmental conditions, and Z. marina transplants have adapted well to the new transplant environment.

• 한국기후변화학회지
• /
• 제8권4호
• /
• pp.287-295
• /
• 2017

This paper provides a mathematical approach for estimating flood risks due to the effects of climate change by developing a one dimensional (1D) hydraulic model for the mountainous river reaches located close to the Yeongwol thermal power plant. Input data for the model, including topographical data and river discharges measured every 10 minutes from July $1^{st}$ to September $30^{th}$, 2013, were imported to a 1D hydraulic model. Climate change scenarios were estimated by referencing the climate change adaptation strategies of the government and historical information about the extreme flood event in 2006. The down stream boundary was determined as the friction slope, which is 0.001. The roughness coefficient of the main channels was determined to be 0.036. The results show the effectiveness of the riverbed widening strategy through the six flooding scenarios to reduce flood depth and flow velocity that impact on the power plant. In addition, the impact of upper Namhan River flow is more significant than Dong River.