• East Asian Economic Review
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• 제26권1호
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• pp.49-91
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• 2022

Recent years have witnessed renewed interest in Africa and public diplomacy has emerged as the vital tool being used to cultivate these relations. China has been leading in pursuing stronger economic partnership with Africa while middle powers such as Korea are also intensifying engagement with the continent. While previous studies have analyzed the implications of China's activities in Africa on advanced powers, none has examined them from the paradigm of middle powers. This study fills this gap by assessing China's activities in Africa, their economic engagement and implications for Korea's interest in Africa. The analysis is qualitative based on secondary data from various sources and literature. The study shows that China's public diplomacy strategy involves a high degree of innovation and has evolved to encompass new tools and audiences. China has institutionalized a cooperative model that permeates many aspects of governance institutions in Africa, enabling it to strengthen their relations. This could also be helping China to adjust faster leadership transitions in Africa. Whereas the US is still the most influential country in Africa, China is influential in economic policies and has outstripped the US in infrastructure diplomacy. This could be because African policy makers align more with China's economic model than the US' mainstream economics. Chinese aid to Africa has been diversified to social sectors that are more responsive to the needs of Africa. Trade and investment relations between China and Africa have deepened, but so does trade imbalance since 2010. China mainly imports natural resources and raw materials from Africa. But this product portfolio is not different from Korea and the US. China's energetic insertion in Africa using various strategies has significant implications for countries with ambitions in Africa. Korea can achieve its ambitions in Africa by focusing resources in areas it can leverage its core strengths-such as education and vocational training, environmental policy and development cooperation.

• 한국재난정보학회 논문집
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• 제19권3호
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• pp.562-571
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• 2023

연구목적: 본 연구는 물과 관련된 재난의 심각성과 이에 대한 도시 대응 전략마련의 중요성에 초점을 맞추어 탄력적인 수변 공간 재구조화의 방향성 모색을 목표로 한다. 연구방법: 이를 위해 도시 리질리언스의 이론적 고찰을 토대로 해외의 계획 및 설계사례를 분석하여 국내 수변 공간 계획·설계에 적용 가능한 물리적·사회 시스템적 설계요소를 도출하였다. 연구결과: 리질리언트 바이 디자인 공모전의 제안들은 기존 계획안들과 비교하여, 더욱 체계적인 방식으로 탄력적인 사회 시스템 마련과 지속가능성을 위한 전략들을 담고 있었으며, 스펀지 시티 프로젝트들에서는 탄력적 도시 수변 공간조성을 위한 다양한 물리적 설계전략과 기술들을 발견하였다. 결론: 교육적 기능의 제고와 주민참여의 확대, 가버넌스 시스템의 마련과 체계적인 지속가능한 계획 수립, 생태적 접근방식과 다양한 저영향개발기법 도입 등은 재난에 탄력적으로 대응하기 위한 국내 수변 공간 계획·설계에 고려되어야 할 요소들이다.

• 한국사회정책
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• 제20권2호
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• pp.233-260
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• 2013

이 글은 한국에서 사교육 억제정책이 시행되었음에도 불구하고 사교육이 확산되는 메커니즘을 사교육 공급자의 수요자 동원능력과 시장전략을 중심으로 분석한다. 사교육 정책의 성패는 사교육 시장의 정치에서 가장 중요한 행위자인 사교육 공급자가 수요자를 동원할 수 있는 힘을 얼마나 효과적으로 차단하느냐에 달려 있다. 최근 20여 년간 사교육 정책은 두 가지 지점에서 실패했다. 첫째, 정책의 방향이 사교육을 억제할 의도가 없었다. 헌법재판소 판결은 공급자에게 기회의 창을 제공하였고 외견상 사교육을 줄이고자 했던 5 31 교육개혁은 공급자의 동원능력에 중립적이었다. 자유주의적 신념윤리에 경도되어 책임윤리가 결여된 두 정책결정으로 사교육은 확산될 가능성을 잉태했다. 둘째, 사교육 공급자는 수요자의 욕망과 불안 심리에 호소함으로써 이들을 동원해 내는 데 성공했다. 사교육 공급자는 공교육 강화정책, 입시제도 조정정책, 사교육 수요충족 정책 등에 맞서 기존수요 관리전략, 대응 수요 창출전략, 신규수요 창출전략시장 등 시장전략을 채택했다. 이들은 사교육 억제정책의 유형에 따라 효과적인 전략을 구사함으로써 정책을 무기력하게 만들었다. 향후 사교육정책은 한국의 사회정치적 맥락, 특히 공급자의 수요자 동원능력에 주목하는 책임윤리를 바탕으로 결정해야 한다.

• 한국환경농학회지
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• 제38권4호
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• pp.296-306
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• 2019

온도는 곤충의 발달, 성장, 생식에 중요한 요인이며, 또한 곤충의 생존에 직접적 관련있는 물리적 요인이다. 변온동물인 곤충은 생존을 위해 기후변화에 반응을 해야 하며, 저온과 같은 취약한 환경하에서도 다양한 생존전략을 발달시켜야 한다. 본 연구는 저온에 대한 적응에 기여하는 유전자를 동정하기 위해 배추좀나방 유충의 지방체를 저온과 상온에 노출시켜 전사체 분석을 수행하였다. 저온전사체에서는 chitinase, 표피단백질, Hsp23, chytochrome, Glutathione S transferase, phospholipase 2 유전자의 발현이 증가된 반면, 에너지 대사에 관여하는 UDP-당전이효소, trehalase, trehalose transporter는 오히려 발현이 감소하였다. 저온에 곤충이 노출되었을 때, 대사중심인 지방체의 유전자 발현의 변화가 곤충의 온도 적응을 이해하는 단서를 제공할 수 있을 것으로 기대된다.

• Plant Biotechnology Reports
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• 제2권3호
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• pp.213-218
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• 2008

Swertia chirata is an endangered gentian species that prefers to grow at higher altitudes. This ethnomedicinal herb is known primarily for its bitter taste caused by the presence of important phytochemicals that are directly associated with human health benefits. Due to a continuous loss of habitat and inherent problems of seed viability and seed germination, alternative strategies for propagation and conservation are urgently required to prevent the possible extinction of this species. We have formulated a reproducible protocol for the rapid propagation and conservation of this plant using leaves taken from in vitro shoot cultures. Direct induction of more than seven shoot buds per explant was achieved for the first time when the explants were placed on MS medium supplemented with $2.22{\mu}M$ N-6-benzyladenine, $11.6{\mu}M$ kinetin, and $0.5{\mu}M$ ${\alpha}-naphthalene$ acetic acid. Direct organogenesis was noted exclusively from the adaxial surface of the basal segments of leaves. Leaves closer to the apical meristem were more responsive than those farther away from the meristem. Plants raised through direct organogenesis were evaluated for their clonal fidelity by chromosomal analysis and DNA fingerprinting. Complete plants were successfully transferred to the field condition and produced viable seeds. Given the enormous potential of this age-old medicinal plant in terms of potential health-benefitting drugs, this protocol can be used for commercial propagation purposes and to initiate future genetic improvement studies.

• 센서학회지
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• 제23권5호
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• pp.314-319
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• 2014

Here, we review the various methods for the preparation of vanadium dioxide ($VO_2$) films and nanowires, and their potential applications to the sensors such as gas sensor, strain sensor, and temperature sensor. $VO_2$ is an interesting material on account of its easily accessible and sharp Mott metal-insulator transition (MIT) at ${\sim}68^{\circ}C$ in the bulk. The MIT is also triggered by the electric field, stress, magnetic field etc. This paper involves exceptionally sensitive hydrogen sensors based on the catalytic process between hydrogen molecules and Pd nanoparticles on the $VO_2$ surface, and fast responsive sensors based on the self-heating effects which leads to the phase changes of the $VO_2$. These features will be seen in this paper and can enable strategies for the integration of a $VO_2$ material in advanced and complex functional units such as logic gates, memory, FETs for micro/nano-systems as well as the sensors.

• Journal of Information Technology Applications and Management
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• 제22권2호
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• pp.19-41
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• 2015

Many studies have focused on the influences and outcomes of online game addiction. However, few studies have investigated how the online game addiction prevention behavior differs depending on online game user. In order to fill this gap, this study attempts to classify online game users based on risk perception attitude (RPA) framework. More specifically, this research tries to show online game user can be classified into four groups based on perceived risk of online game addiction and efficacy beliefs of online game addiction protection, and to identify how the groups differ in terms of motivation, information seeking, and behaviors for online game addiction prevention. For this purpose, analysis on survey data from 240 Korean college students who use online game reveals that the users can be classified into responsive, avoidance, proactive, indifference groups. Furthermore, there are differences between groups in terms of motivation, information seeking, and behaviors for online game addiction prevention. This study contributes to expand existing literature by providing tailored guidelines for implementation of online game addiction prevention strategies and policy.

• Molecules and Cells
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• 제40권10호
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• pp.697-705
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• 2017

The maintenance of inorganic phosphate (Pi) homeostasis is essential for plant growth and yield. Plants have evolved strategies to cope with Pi starvation at the transcriptional, post-transcriptional, and post-translational levels, which maximizes its availability. Many transcription factors, miRNAs, and transporters participate in the Pi starvation signaling pathway where their activities are modulated by sugar and phytohormone signaling. Environmental stresses significantly affect the uptake and utilization of nutrients by plants, but their effects on the Pi starvation response remain unclear. Recently, we reported that Pi starvation signaling is affected by abiotic stresses such as salt, abscisic acid, and drought. In this review, we identified transcription factors, such as MYB, WRKY, and zinc finger transcription factors with functions in Pi starvation and other environmental stress signaling. In silico analysis of the promoter regions of Pi starvation-responsive genes, including phosphate transporters, microRNAs, and phosphate starvation-induced genes, suggest that their expression may be regulated by other environmental stresses, such as hormones, drought, cold, heat, and pathogens as well as by Pi starvation. Thus, we suggest the possibility of cross-talk between Pi starvation signaling and other environmental stress signaling pathways.

• 디지털산업정보학회논문지
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• 제11권4호
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• pp.1-12
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• 2015

This research analyzes the current state of the semiconductor industry delivering the prediction for the future development of the semiconductor industry along with some semiconductor memory's responsive strategies. In the 2014, top 10 semiconductor companies were targeted and studied its growth based on its profitability and growth indications in perspective during three years. The system semiconductor industry with the increase in Hyper-scale customers, proactive actions in the technology consortium, is polarizing caused by increased R&D expense to ensure process scaling limits and high performance, and some results have shown: PC and Mobile slowdown and growth recession phenomenon due to IoT's unclear direction. The leading company is to secure new growth engines through 'Acquiring'. While as the subordinated companies following this consecutive survival through the 'Acquired', the future of system semiconductor industry is to strengthen the market dominance and its techniques by concentrating on the reorganization of the market by few large companies. Accordingly, the semiconductor memory industry is expected to reach the limit of its expansion to domain of system semiconductor, and it is highly suggesting the need of the 'Memory Life Extension' growth strategy.

• 한국병원경영학회지
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• 제16권1호
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• pp.50-76
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• 2011

This study chiefly aims to examine the relations between customer's responsive behavior and service recovery satisfaction in medical service failure. Therefore, this paper deals with the effect of medical service failure severity perceived by customers on complaint behavior and service recovery expectation, the effect of complaint appealing behavior and service recovery expectation on perceived recovery and service recovery satisfaction, and the roles of service recovery(compensation) and recovery fairness as moderating variables. According to the result of this research, it was shown that service failure severity affects complaint behavior and service recovery expectation positively, and compliant behavior and service recovery expectation affects perceived recovery performance and service recovery satisfaction positively. Moreover, the moderating roles of service recovery(compensation) and recovery fairness indicated partially significant results and affected perceived recovery performance and service recovery satisfaction direct positively. The result of this study is expected to provide support when medical institutes establish service recovery strategies.