• ETRI Journal
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• 제41권1호
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• pp.52-60
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• 2019

A fast hologram calculation approach is proposed to reduce computational load by avoiding the recalculation of redundancy information. In the proposed method, the hologram is divided into several sub-holograms that record and reconstruct different views of 3D objects. The sub-hologram is generated from its adjacent calculated sub-holograms by only adding the holograms of difference images between an adjacent pair of views. The repetitive information of two adjacent views is called angular redundancy. Therefore, avoiding the recalculation of this angular redundancy can considerably reduce the computational load. Experimental results confirm that the proposed method can reduce the computational time for the statue head, rabbits, and car to 4.73%, 6.67%, and 10.4%, respectively, for uniform intensity, and to 56.34%, 57.9%, and 66.24%, respectively, for 256 levels intensity, when compared to conventional methods.

• 대한수의사회지
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• 제39권6호
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• pp.517-522
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• 2003

Multicentric lymphoma에 걸쳐 화학요법치료를 받은 25case의 보호자들에게 그들 애견의 삶의 질의 평가를 조사했다. 이에 보호자들은 자기 애견의 삶의 질에 대한 68$\%$의 보호자가 lymphoma가 발생하기 전과 같이 좋았다고 이야기했고 나머지 32$\%$의 보호자들은 발병하기 전보다 더 좋진 않지만 만족한다는 답을 얻었다. 합병증은 52$\%$의 애견에서 발생되었다고 한다. 92$\%$의 보호자들은 그들 애견의 화학요법 치료선택에 대해서 후회가 없다고 했다. 이 결과는 화학요법 치료가 합병증을 유발함에도 불구하고 많은 보호자들이 그들 애견이 화학요법 치료를 받음으로써 그들 애견의 삶의 질이 좋았다고 생각한다는 것이다.

• 한국광학회:학술대회논문집
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• 한국광학회 2009년도 동계학술발표회 논문집
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• pp.327-328
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• 2009

• Journal of Species Research
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• 제5권2호
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• pp.201-205
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• 2016

Gongylidioides kaihotsui Saito and Ono, 2001 and Mermessus naniwaensis (Oi, 1960) of Linyphiidae are described from Korea with taxonomic illustrations. The genera Gongylidioides Oi, 1960 and Mermessus O.P.-Cambridge, 1899 are newly recorded genera to Korean spider fauna.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.405-407
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• 2004

We have optimized the low temperature growth of microcrystalline silicon at 80$^{\circ}C$. This material has been used to fabricate bottom gate ${\mu}c$-Si:H TFTs by using a layer-by-layer nitrogenation process. By using this process the amorphous incubation layer can be converted into silicon nitride and leads to an increase in field effect mobility of the TFT

• Biomaterials and Biomechanics in Bioengineering
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• 제2권3호
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• pp.143-157
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• 2015

Successful integration of cementless femoral stems using porous surfaces relies on effective periimplant bone healing to secure the bone-implant interface. The initial stages of the healing process involve protein adsorption, fibrin clot formation and cell osteoconduction onto the implant surface. Modelling this process in vitro, the current work considered the effect of fibrin deposition on the responses of human mesenchymal stromal cells cultured on ferritic fibre networks intended for magneto-mechanical actuation of in-growing bone tissue. The underlying hypothesis for the study was that fibrin deposition would support early stromal cell attachment and physiological functions within the optimal regions for strain transmission to the cells in the fibre networks. Highly porous fibre networks composed of 444 ferritic stainless steel were selected due to their ability to support human osteoblasts and mesenchymal stromal cells without inducing untoward inflammatory responses in vitro. Cell attachment, proliferation, metabolic activity, differentiation and penetration into the ferritic fibre networks were examined for one week. For all fibrin-containing samples, cells were observed on and between the metal fibres, supported by the deposited fibrin, while cells on fibrin-free fibre networks (control surface) attached only onto fibre surfaces and junctions. Initial cell attachment, measured by analysis of deoxyribonucleic acid, increased significantly with increasing fibrinogen concentration within the physiological range. Despite higher cell numbers on fibrin-containing samples, similar metabolic activities to control surfaces were observed, which significantly increased for all samples over the duration of the study. It is concluded that fibrin deposition can support the early attachment of viable mesenchymal stromal cells within the inter-fibre spaces of fibre networks intended for magneto-mechanical strain transduction to in-growing cells.

• Archives of Plastic Surgery
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• 제47권4호
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• pp.324-332
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• 2020

Background The deep inferior epigastric artery perforator (DIEP) flap is the commonest flap used for breast reconstruction after mastectomy. It is performed as a unilateral (based on one [unipedicled] or two [bipedicled] vascular pedicles) or bilateral procedure following unilateral or bilateral mastectomies. No previous studies have comprehensively analyzed analgesia requirements and hospital stay of these three forms of surgical reconstruction. Methods A 7-year retrospective cohort study (2008-2015) of a single-surgeon's DIEP-patients was conducted. Patient-reported pain scores, patient-controlled morphine requirements and recovery times were compared using non-parametric statistics and multivariable regression. Results The study included 135 participants: unilateral unipedicled (n=84), unilateral bipedicled (n=24) and bilateral unipedicled (n=27). Univariate comparison of the three DIEP types showed a significant difference in 12-hour postoperative morphine requirements (P=0.020); bipedicled unilateral patients used significantly less morphine than unipedicled (unilateral) patients at 12 (P=0.005), 24 (P=0.020), and 48 (P=0.046) hours. Multivariable regression comparing these two groups revealed that both reconstruction type and smoking status were significant predictors for 12-hour postoperative morphine usage (P=0.038 and P=0.049, respectively), but only smoking, remained significant at 24 (P=0.010) and 48 (P=0.010) hours. Bilateral reconstruction patients' mean hospital stay was 2 days longer than either unilateral reconstruction (P<0.001). Conclusions Although all three forms of DIEP flap breast reconstruction had similar postoperative pain measures, a novel finding of our study was that bipedicled DIEP flap harvest might be associated with lower early postoperative morphine requirements. Bilateral and bipedicled procedures in appropriate patients might therefore be undertaken without significantly increased pain/morbidity compared to unilateral unipedicled reconstructions.

• BMB Reports
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• 제52권1호
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• pp.3-4
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• 2019

Cellular senescence is defined as a state of stable cell cycle exit in response to various stimuli, which include both cytotoxic stress and physiological cues. In addition to the core non-proliferative aspect, senescence is associated with diverse functionalities, which contribute to the role of senescence in a wide range of pathological and physiological processes. Such functionality is often mediated by the capability of senescent cells to communicate with their surroundings. Emerging evidence suggests that senescence is not a single entity, but a dynamic and heterogeneous collective phenotype. Understanding the diverse nature of senescence should provide insights into the complexity of tissue homeostasis and its disruption, such as in aging and tumorigenesis.

• STI Policy Review
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• 제4권1호
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• pp.74-93
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• 2013

Although open innovation (OI) has been an important research theme for over a decade, its theoretical framework has been relatively under-researched. As OI involves a wide range of innovation activities, a firm's capacities in the use of the various firm resources play a critical role in OI implementation. However, it is unclear how they affect firms' performances for little is known of OI capacities. Based on a theoretical framework derived from the literature, this study looks into the relationships between six OI capacities (inventive, absorptive, transformative, connective, innovative, and desorptive) and financial performance using the Korean Innovation Survey (KIS) 2008 data. The research model was tested using structural equation modelling (SEM) while potential differences in capacities between different firm groups were also investigated. The results indicate that 1) OI capacities are significantly associated with firms' financial performance; 2) capacities are highly correlated with one another; and 3) some capacities are differently configured between different types of firms. Findings suggest that policy makers should pay more attention to helping firms enhance OI capacities and attempt to develop relevant policies in order to complement inadequate capacities.

• 한국경제지리학회지
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• 제9권1호
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• pp.61-80
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• 2006

본 연구는 영국 케임브리지의 테크노폴을 대상으로 하여 지역혁신정책 거버넌스 구조를 분석하였다. 이를 위해 지역 혁신 측면에서 모범적인 사례가 되고 있는 케임브리지 테크노폴을 사례로 지역혁신정책 거버넌스를 분석하기 위하여 Albors et al를 비롯한 여러 연구자들의 연구결과를 응용하여 분석 틀을 설정하였다. 이 분석 틀에 기초하여 국가차원과 지역차원에서 영국 케임브리지 테크노폴의 성장과정에 도입된 혁신정책의 정책목표 및 사업, 혁신주체 및 상호관계, 평가 및 성과 등을 분석하였다. 그 결과, 국가차원에서는 영국 중앙정부가 구매자, 규제자, 지식원천 지원자로서의 역할이 명확하고, 다양한 정부부처의 정책이 DTI를 거쳐서 통합 조정되고 있으며, 개별 중앙부처의 정책들이 지역에 설치되어 있는 특별행정기관에서 조정되고 있는 것으로 평가된다. 지역차원에서 볼 때, 지역혁신정책들을 통합적으로 조정, 집행하는 전담기관(EEDA)이 있기 때문에 멀티거버넌스로 되어 있는 환경에서도 효율적인 업무의 추진이 가능하다. 지역 내에서는 네트워킹 조직들이 다양한 혁신주체들을 공식 비공식적으로 연계시켜 주고 있으며, 이해 관계자들 간 신뢰를 중시하고 있고, 대학의 지식 및 기술 상용화 제도가 정착되어 있는 점이 성공적이라 할 수 있다.