• 한국경제지리학회지
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• 제16권1호
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• pp.1-16
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• 2013

본 연구는 우리나라 패션산업의 집중이 강하게 나타나고 있는 수도권 지역을 대상으로 패션산업의 공간분포를 파악하고, 그 특성을 분석한다. 특히, 우리나라 패션산업을 기존의 노동집약적인 저수익의 봉제의류산업에서 디자인을 통한 고부가가치 창출이 가능한 지식기반산업으로 전환시키고자 하는 상황에서 우리나라 패션산업이 집중되어 있는 서울의 패션제조업 분포에 지식기반산업들이 보이는 특성이 나타나는가에 초점을 두고 분석하였다. 이를 위하여 공간적 자기상관 분석을 이용하여 직능별 패션산업의 공간적 군집여부를 탐색하고, 그 분포양상을 바탕으로 수도권 패션산업의 클러스터를 구분 짓고 그 특성을 파악하였다. 또한 직능 간 연계성을 파악하기 위하여 이항 로지스틱 회귀분석을 통해 직능별 패션산업의 공간적 군집 형성에 영향을 주는 타 직능 변수와의 관계식을 도출하였다.

• PNF and Movement
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• 제7권1호
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• pp.17-23
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• 2009

Purpose : To provide a convenient framework for PNF practice, we reviewed the relationship between ICF framework and PNF framework. Methods : We reviewed literatures related with ICF and PNF. Results : ICF model is useful tool for physical therapist who is working in PNF to identify the interactions the components of individual's health, especially the relationship between functioning and disability. A framework for PNF is philosophy which included the concept, functional approach. It is essential to identify primary activity limitation and causal impairment in PNF field and evaluate the their relationship. The ICF model can be used to classify the examination information. Next step is to prioritize the activity limitation and then evaluate the interrelationships among each components of the ICF framework. Conclusions : ICF model guides physical therapist in PNF practice to identify patient problems and evaluate the interrelationship of components of their health. This model is logical framework to directs functional approach as PNF philosophy to be approached the goal.

• 한국펄프종이공학회:학술대회논문집
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• 한국펄프종이공학회 2006년도 PAN PACIFIC CONFERENCE vol.2
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• pp.209-213
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• 2006

Relationship between printability and rheological properties of UV flexographic (flexo) inks were investigated. UV flexo suspensions of carbon black in liquid medium having various binding materials such as acylate pre-polymer, di/multi-functional monomer, and diluents, were used as sample inks. Inks were characterized on a rheometer in terms of steady and dynamic behaviors. To understand the rheological properties of UV flexo inks, we must determine the specific rheological properties of chemical and/or physical interactions of their components (pigments, functional monomers, and pre-polymers). In particular, we discussed the influence of multi-functional monomers and the relationship between the rheological properties and transient networks formed by carbon black. In this study, we investigated the interrelationships between rheological properties of UV flexo inks and chemical and/or physical interactions of their components. To investigate correlations between the printability and the rheological behaviors induced by interfacial interactions between ink compositions, we carried out rheological tests of UV ink suspensions. The results were compared with printing tests so as to find out the relationship between printability and rheological properties of ink.

• 한국콘텐츠학회논문지
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• 제17권9호
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• pp.510-522
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• 2017

본 연구는 한국 TV 뉴스 브랜드 이미지를 기능적, 상징적 속성의 측면에서 알아보고 이들의 상호 관계, 그리고 이들이 시청의도에 미치는 영향을 조사하는 것을 목적으로 하였다. KBS1, SBS, JTBC의 저녁 메인 뉴스 시청자 412명을 대상으로 서베이를 실시하였으며, 요인분석과 회귀분석을 사용하였다. 연구 결과에 따르면, TV 뉴스 브랜드 개성은 진취성, 정직성, 전통성 등 3개의 차원으로 구성되어 있었다. JTBC가 진취성, 정직성 면에서 SBS와 KBS1을 제치고 가장 높은 평균값을 보였고, 전통성 면에서는 가장 낮은 평균값을 나타냈다. 또한 TV 뉴스 브랜드 이미지의 기능적, 상징적 속성은 높은 상관관계를 보이며, 상호 동일한정도의 영향력을 미치고 있었다. 끝으로 시청 의도는 뉴스 브랜드 기능적 편익, 정직성, 그리고 진취성 개성 요인의 순으로 결정되었다.

• International Journal of Internet, Broadcasting and Communication
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• 제13권3호
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• pp.169-177
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• 2021

Recently, the use of electric and electronic control systems is increasing in the automobile industry. This increase in the electric and electronic control system greatly increases the complexity of designing a vehicle, which leads to an increase in the malfunction of the system, and a safety problem due to the malfunction is becoming an issue. Based on IEC 61508 relating to the functional safety of electrical/electronic/programmable electronics, the ISO 26262 standard specific to the automotive sector was first established in 2011, and a revision was published in 2018. Malfunctions due to system failure are covered by ISO 26262, but ISO/PAS 21448 is proposed to deal with unintended malfunctions caused by changes in the surrounding environment. ISO 26262 sets out safety-related requirements for the entire life cycle. Functional safety analysis includes FTA (Fault Tree Analysis), FMEA (Failure Mode and Effect Analysis), and HAZOP (Hazard and Operability). These analysis have limitations in dealing with failures or errors caused by complex interrelationships because it is assumed that a failure or error affecting the risk occurs by a specific component. In order to overcome this limitation, it is necessary to apply the STPA (System Theoretic Process Analysis) technique.

• 대한수학회보
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• 제43권1호
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• pp.189-212
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• 2006

Let $F^{\alpha}G$ be a twisted group algebra with basis ${{\mu}g|g\;{\in}\;G}$ and $P\;=\;{C_g|g\;{\in}\;G}$ be a partition of G. A projective class algebra associated with P is a subalgebra of $F^{\alpha}G$ generated by all class sums $\sum\limits{_{x{\in}C_g}}\;{\mu}_x$. A main object of the paper is to find interrelationships of projective class algebras in $F^{\alpha}G$ and in $F^{\alpha}H$ for H < G. And the a-spherical function will play an important role for the purpose. We find functional properties of a-spherical functions and investigate roles of $\alpha-spherical$ functions as characters of projective class algebras.

• Preventive Nutrition and Food Science
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• 제15권3호
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• pp.189-195
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• 2010

Water extracts from 20 medicinal plants, traditionally used for postmenopausal symptoms in Korea, were examined for their vasorelaxant activity in isolated rat thoracic aorta rings precontracted with norepinephrine (NE). Among the 20 medicinal plants, Cornus officinalis (CoEx, 0.3 mg/mL), Schisandra chinensis (ScEx, 0.3 mg/mL), Erythrina variegate (EvEx, 0.3 mg/mL), and Epimedium koreanum (EkEx, 0.3 mg/mL) showed rapid relaxation of endothelium-intact aorta ($69\pm4%$, $40\pm3%$, $25\pm2%$, and $23\pm3%$ of active tone induced by NE, respectively). In contrast, the extracts of Erythrina variegata (EvEx), Angelica gigas (AgEx), Pueraria thunbergiana (PtEx), and EkEx lead to gradual (i.e., long-term) relaxation to baseline in endothelium-intact vessels. The time to complete relaxation was 20～40 min. These 6 plant extracts were selected for the investigation of possible underlying mechanisms. The CoEx-, ScEx-, or EkEx-induced rapid relaxations were virtually abolished by endothelium denudation, and were significantly inhibited by pretreatment with nitric oxide (NO) synthase inhibitor $N^G$-nitro-L-arginine (L-NNA, 10 ${\mu}M$), indicating that increased formation of NO might contribute to the endothelium-mediated relaxation. In long-term responses, the endothelium denudation did not affect PtEx-induced relaxation, whereas it delayed responses by EvEx and AgEx, and significantly inhibited the effect of EkEx. Among EvEx, AgEx, and PtEx, EvEx attenuated the $CaCl_2$-induced vasoconstriction in high-potassium depolarized medium, implying that EvEx is involved in inhibition of the extracellular calcium influx to smooth muscle through voltage dependent calcium channels. These results provide the scientific rationale for the interrelationships between the use of 20 medicinal plants and their effects on cardiovascular health in estrogen deficient conditions.

• Journal of Korean Neurosurgical Society
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• 제57권5호
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• pp.342-349
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• 2015

Background : Higher reperfusion rates have been established with endovascular treatment for acute ischemic stroke patients. There are limited data on the comparative performance of mechanical thrombectomy devices. This study aimed to analyse the efficacy and safety of the stent retriever device (Solitaire stent) by comparing procedure time, angiographic outcome, complication rate and long term clinical outcome with previous chemical thrombolysis and mechanical thrombectomy using penumbra system. Method : A retrospective single-center analysis was undertaken of all consecutive patients who underwent chemical thrombolysis and mechanical thrombectomy using Penumbra or Solitaire stent retriever from March 2009 to March 2014. Baseline characteristics, rate of successful recanalization (modified Thrombolysis in Cerebral Infarction score 2b-3), symptomatic intracerebral hemorrhage, procedure time, mortality and independent functional outcomes ($mRS{\leq}2$) at 3 month were compared across the three method. Results : Our cohort included 164 patients, mechanical thrombectomy using stent retriever device had a significant impact on recanalization rate and functional independence at 3 months. In unadjusted analysis mechanical thrombectomy using Solitaire stent retriever showed higher recanalization rate than Penumbra system and chemical thrombolysis (75% vs. 64.2% vs. 49.4%, p=0.03) and higher rate of functional independence at 3 month (53.1% vs. 37.7% vs. 35.4%, p=0.213). In view of the interrelationships between all predictors of variables associated with a good clinical outcome, when the chemical thrombolysis was used as a reference, in multiple logistic regression analysis, the use of Solitaire stent retriever showed higher odds of independent functional outcome [odds ratio (OR) 2.62, 95% confidence interval (CI) 0.96-7.17; p=0.061] in comparison with penumbra system (OR 1.57, 95% CI 0.63-3.90; p=0.331). Conclusion : Our initial data suggest that mechanical thrombectomy using stent retriever is superior to the mechanical thrombectomy using penumbra system and conventional chemical thrombolysis in achieving higher rates of reperfusion and better outcomes. Randomized clinical trials are needed to establish the actual benefit to specific patient populations.

• 지적과 국토정보
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• 제44권1호
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• pp.1-15
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• 2014

본 연구에서는 문헌고찰을 통해 생태계와 공간정보생태계 모형 개발을 위한 기본 요건을 도출한 후에 이를 전제로 공간정보산업을 중심으로 공간정보생태계 모형을 개발 제시하였다. 다음으로, 국내 공간정보산업 발전이 미진한 근본적 원인이 생태계가 비활성화되어 효율적이지 못한 데 있으므로, 향후 공간정보생태계를 활성화하는 데 필요한 관련 기관들의 역할을 논의하였다. 특히 국내 공간정보생태계 활동주체의 대표 격이라고 할 수 있는 대한지적공사가 공익성과 사익성을 동시에 추구하는 이중적인 기관특성을 유지한 채, 미래지향적인 역할과 기능 재정립을 통해 생태계의 타 구성주체와 상호협력하면서 함께 발전하는 공진화 전략 대안을 4가지로 요약해 제안하였다.

• 정보처리학회 논문지
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• 제13권2호
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• pp.26-33
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• 2024

최근에 들어 디지털 트윈 기술에 대한 관심이 급증하고 있다. 디지털 트윈은 컴퓨터 기반 시뮬레이션을 통해 물리적 현상이나 사물을 모사함으로써 대상을 최적화하는 기술이다. 현재는 특정 분야에 국한되는 프로세스를 최적화하기 위한 단일 디지털 트윈이 개발되고 있지만, 독립된 디지털 트윈만으로는 현실의 방대하고 복합적인 프로세스를 분석하기 어렵다. 이를 극복하고자 도입된 개념이 연합 디지털 트윈이다. 지금까지 연합 디지털 트윈의 연구 방향은 주로 도시와 같이 거시적인 대상을 최적화하는 방식에 중점을 두었다. 그러나 트윈이 상호 연계된다는 특성을 활용하면 기존에 구현되었던 단일 디지털 트윈의 모듈화도 가능할 것으로 보인다. 본 연구에서는 프로세스 최적화와 관련된 기능상의 관점에서 단일 디지털 트윈과 연합 디지털 트윈의 개념 및 상호 관계를 정립하고, 이를 토대로 연합 디지털 트윈을 활용한 단일 디지털 트윈의 모듈화 기법을 설계한다. 아울러, 실제 면 제조 공정 사례를 바탕으로 모듈화 기법을 적용한 모델을 설계함으로써 제안하는 방법론의 효용성을 논의하고자 한다.