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Yoon Joohyun,Yu Hyeona,Jang Yoonjeong,Lee Daseul,Park Yun Seong,Ihm Hong Kyu,Ryoo Hyun A,Cho Nayoung,Lee Jakyung,Kim Yeoju,Park Jungkyu,Kang Hyo Shin,Ha Tae Hyon,Myung Woojae 대한신경정신의학회 2023 PSYCHIATRY INVESTIGATION Vol.20 No.5
Objective Mood instability (MI) is a clinically significant trait associated with psychiatric disorders. However, there are no concise measurements to evaluate MI. The initial Mood Instability Questionnaire-Trait (MIQ-T) was developed to fill this gap. The current study aimed to create a short form of MIQ-T (MIQ-T-SF) that measures MI with high validity and reliability in the Korean general population.Methods Of the 59 items in the MIQ-T, 17 items were chosen for the MIQ-T-SF following the factor analysis process. In total, 540 participants completed the MIQ-T-SF. Cronbach’s alpha and McDonald’s omega were used to evaluate reliability. Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were used to determine construct validity. Concurrent validity was confirmed via comparisons with Personality Assessment Inventory-Borderline Features Scale. Measurement invariance across gender and age groups was confirmed before analyzing differences in scores using Kruskal-Wallis test.Results The MIQ-T-SF displayed expected correlations and high internal consistency (α=0.71–0.90, Ωt=0.72–0.92). Using EFA and CFA, a five-factor structure was confirmed. Measurement invariance was supported, and gender differences were observed.Conclusion The MIQ-T-SF is an accurate and reliable method to detect MI in the Korean general population. The study’s results offer new perspectives for future studies on MI.
Yoon, Miseon,Choi, Jungkyu,Cho, Jinhan American Chemical Society 2013 Chemistry of materials Vol.25 No.9
<P>We report the successful multifunctional colloids that enable reversible phase transfer between organic and aqueous phases via layer-by-layer (LbL) assembly. These colloids exhibited a high level of dispersion stability in a variety of solvents ranging from nonpolar to aqueous media, based on the type of outermost layer adsorbed onto the colloids. Hydrophobic nanoparticles (NPs) synthesized using carboxylic acid or ammonium moiety-based ligands (i.e., oleic acid or tetraoctylammonium) in a nonpolar solvent (toluene, hexane, or chloroform) were directly deposited onto dendrimer-coated SiO<SUB>2</SUB> colloids via ligand exchange between the hydrophobic ligands and the amine-functionalized dendrimers in the same organic solvent. Additionally, these hydrophobic NPs were adsorbed onto the colloids forming the densely packed layer structure that could not be easily achieved by conventional electrostatic LbL assembly. The subsequent adsorption of amine-functionalized dendrimers onto hydrophobic NP-coated colloids led to well-dispersed colloids in aqueous media as well as alcohol solvent and possibly induced the deposition of electrostatic LbL-assembled films, such as (cationic Au<SUB>NP</SUB>/anionic polyelectrolyte (PE))<SUB><I>n</I></SUB> or (cationic PE/anionic enzyme)<SUB><I>n</I></SUB> multilayers. Furthermore, the additional deposition of ligand exchange-induced multilayers (i.e., (dendrimer/hydrophobic NP)<SUB><I>n</I></SUB>) onto electrostatic multilayer-coated colloids produced colloids with highly dispersible properties in organic media. Given that previous approaches to the reversible phase transfer of colloids have depended on the physicochemical properties of selective ligands under limited and specific conditions, our approach may provide a basis for the design and exploitation of high-performance colloids with tailored functionality in a variety of solvents.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/cmatex/2013/cmatex.2013.25.issue-9/cm400207d/production/images/medium/cm-2013-00207d_0008.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/cm400207d'>ACS Electronic Supporting Info</A></P>
이질 시스템에서 통신 시간을 고려한 복제 기반 태스크 스케줄링
백정규(Jungkyu Baek),정진하(Jinha Cheong),윤완오(Wanoh Yoon),신광식(Kwangsik Shin),최상방(Sangbang Choi) 한국정보과학회 2004 한국정보과학회 학술발표논문집 Vol.31 No.2Ⅰ
병렬 및 분산 컴퓨터 시스템에서 선후 관계의 제약을 갖는 노드들의 스케줄링은 잘 알려진 NP-complete이다. 이러한 노드들의 스케줄링을 효율적으로 수행하기 위해 많은 알고리즘이 부모 노드와 이질 프로세서에 대한 정보를 고려하여 제안되었다. 하지만 여러 개의 부모 노드와 이질 프로세서에 대한 다양한 경우를 충분히 고려 하지 못했다. 본 논문은 부모 노드에 대한 선후 관계와 이질 시스템의 특성을 고려, 이질 수행 시간을 갖는 다중 프로세서를 대상으로 태스크가 가능한 빨리 수행할 수 있는 시간과 태스크가 가능한 빨리 완료될 수 있는 시간을 이용한 복제 기반의 태스크 스케줄링 기법(DTSC)을 제안하였다. 제안된 알고리즘의 성능은 기존 STDS 알고리즘과 대표적인 입력 그래프에 대해 비교하였고, 스케줄링의 성능 향상을 보여 주었다.
한규석(Kyu Seok Han),윤지원(Jiwon Yoon),김태규(Taekyu Kim),박영우(Young Woo Park),한정규(Jungkyu Han) 한국정보과학회 2018 정보과학회논문지 Vol.45 No.5
최근 많은 기기와 사물들이 사물인터넷(Internet of Thing)기술을 이용해 네트워크에 접속하고 있다. 작은 규모를 대상으로 하는 지역 인터넷(Local Area Network: 이하 LAN)망에서도 많은 기기들이 연결되어 네트워크 토폴로지의 복잡성은 매우 커지고 있다. 이런 작은 규모의 네트워크가 모인 대규모 네트워크도 전국단위로 확장 되고 있는 추세이다. 대규모 네트워크 안에서 집중형 혹은 분산형으로 데이터가 모이거나 퍼져나가는 흐름이 만들어지고 있다. 이 흐름은 각종 산업에 유용하게 이용되고 있다. 특히, 국가기반산업에 혹하는 금융, 통신, 군(軍), 발전 시설은 전국단위 인터넷망을 이용해서 상황을 관제하고 긴급한 상황에 대처할 수 있는 데이터의 흐름을 유지하고 있다. 이런 환경을 갖고 있는 네트워크 상황에서 관제나 데이터 수집 및 저장 혹은 데이터 처리를 하고 있는 중요한 기기(Node)나 이 기기를 포함한 작은범위의 네트워크(LAN)가 전체 네트워크에서 분리 및 고립된다면, 굉장한 혼란을 초래하게 될 것이다. 이 논문에서는 대규모 네트워크에서 중요 LAN혹은 Node를 고립시키는 기법에 대해서 다루게 된다. Many devices and objects have recently been connected to the network using the Internet of Thing technology. In a local area network (LAN) network for small scale, many devices are connected and the complexity of the network topology is greatly increased. Large-scale networks of such small-scale networks are also expanding nationwide. he flow of gathering and spreading data in a concentrated or distributed manner within a large network is being made. This is useful for various industries, financial, telecommunications, military, and power generation facilities in statebased industries use the nationwide Internet network to control and maintain a stream of data that can cope with emergency situations. In a network environment that has such a circumstance, if a critical device (node) or a small range of network (LAN) that is involved in the control, data collection, storage, or data processing is isolated and isolated from the entire network. This paper discusses techniques for isolating critical LANs or Nodes in large networks.
Choi, Won Suk,Choi, Insung S.,Lee, Jungkyu K.,Yoon, Kuk Ro Elsevier 2015 Materials chemistry and physics Vol.163 No.-
<P><B>Abstract</B></P> <P>We demonstrated a new type of visible light-induced photocatalyst, comprising fluorescein molecules, TiO<SUB>2</SUB>, and gold nanoparticles anchored onto polymer fibers. The synthesized fiber composite was fully characterized by thermogravimetric analysis, scanning electron microscopy, transmission electron microscopy, FT-IR spectroscopy, contact angle measurement, and fluorescence microscopy. Under sunlight and visible light irradiation, the photocatalytic activity of the tricomponent system showed 2–3 times greater photodegradation efficiency for methylene blue than a representative photocatalyst, Degussa P25.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Synthesis of a novel composite, polymer fiber/organic dye/TiO<SUB>2</SUB>/gold nanoparticles. </LI> <LI> The composite was characterized by TGA, SEM, TEM, and fluorescence microscopy. </LI> <LI> Improved visible light photocatalytic activity of the sythesized novel composite. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>PSS/PAH-FITC/TiO<SUB>2</SUB>/AuNP composite demonstrated 2–3 times greater visible light photodegradation efficiency for methylene blue than a representative photocatalyst, Degussa P25.</P> <P>[DISPLAY OMISSION]</P>