• 산경연구논집
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• 제15권8호
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• pp.1-12
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• 2024

Purpose: Marketing networks are essential for firms to gain new information and resources, yet their effect on innovation performance under uncertainty remains unclear. This study aims to elucidate the effects of technological and demand variability on the innovation performance of first-tier suppliers, considering different levels of structural holes. It particularly explores how structural holes moderate the relationship between uncertain factors and innovation performance. Research design, data and methodology: To assess the hypotheses, a survey was conducted with the first-tier suppliers. The survey targeted internal networks and the relationships between manufacturers, suppliers, and subsuppliers. Structural equation modeling was employed to validate the hypotheses using measures from previous research. Results: The findings indicate that the impact of technological uncertainty and demand variability on innovation performance varies based on the extent of structural holes in the network. Conclusions: This study provides both theoretical and practical insights for distribution channels, highlighting the competitive advantage of interfirm networks in uncertain conditions. However, the focus on the engineering industry may limit the generalizability of the findings. Future research should explore a broader range of industries to improve result applicability.

• 한국언론정보학보
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• 제70권
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• pp.132-164
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• 2015

한국 사회에서 자신을 이루는 사람들에 대한, 혹은 사람들에 의한 앎의 형성이란 우리의 주체성 실천의 과정이다. 주체성은 자신에 대한 성찰 속에서 끊임없이 만들어지고 의심되고 수행되며 갱신되는 자아의 진실이기 때문이다. 한국 사회의 주체의 해석학을 탐구하는 이 글은 생명에 대한 인식이 관통하는 가운데, '대중, 민중, 다중, 인민, 공동체'의 언어 고리들로 구성된다. 1960년대에는 전후의 궁핍한 상황에서 모호한 덩어리로서 대중이 형성되는 가운데 내면의 의식세계를 가진 개인이 등장한다. 1970년대부터 1980년대에 이르는 시기에는 직접적이고 물리적인 위험(빈곤, 독재)에 대한 투쟁 현장에서 거대하고 강고한 이념적 연대가 집결된다. 한국의 민주화와 함께 그러한 적대 구조가 해체되는 한편 신자유주의적인 지구화 체제의 모순이 심화하는 가운데 구체적이고 특수한 위치들마다 차이와 변화를 함축하는 특이성들이 생성되고 이들이 유기적인 방식들로 연결된다. 이러한 움직임을 통해 거시 미시적인 통치성에 접합하는 다수로서 다중과 인민, 공동체에 대한 사유들이 성장한다. 개별과 보편, 차이와 공동의 원리들이 공존할 수 있기 위해, 다중과 인민성에 관한 급진적 사고의 바탕에는 열린 단수성과 소통적인 집합성을 추구하는 공동체의 윤리적 기획이 연동한다. 한국 대중에 관한 자기 인식은 여러 이론들을 변용하는 과정에서 형성되었다. 현실과의 관련성 안에서 특정한 이론들이 수용되었고, 그 이론들이 선별되어 현실에 접합되거나 탈구되는 과정에서 또 다른 앎의 행위와 의미들을 창출했다. 이는 우리 - 사람에 대한 자기 지식이 개별 이론의 내부에서 완결적으로 설명되는 대신, 이론들이 이 땅에 뿌리내리고 싹트고 성장, 변형되는 과정 속에서, 그들 사이의 관계가 설정되고 연동되는 실행을 통해 우리 - 사람에 대한 성찰적 이해가 만들어졌음을 뜻한다. 이 평탄하지 않은 역사는 앎의 실천을 거치며 한 사회의 집합적 주체성이 형성되는 치열한 생각의 운동성을 보여준다. 주체의 해석학이 완성되는 종결지는 없다. 그 한계는 늘 반성되고 갱생되어야 한다.

• 대한예방한의학회지
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• 제19권1호
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• pp.71-82
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• 2015

Objective : The purpose of this study is to present the desirable model for the promotion of care coordination between Korean Medicine and Western Medicine and develope the instrument to measure the level of coordination. Moreover, we verified the validity and reliability of the developed Instrument. Method : In this study, We developed the 16 items regarding care coordination in Korean Medicine and Western Medicine by literature review and expert interviews. In addition, we verified the validity and reliability of the instrument as a methodological research. Results : We developed two factors such as 'Inter-professional activities' and 'Organizational support' as the instrument to measure the level of care coordination, and each of seven, eight total of 15 measurement items are listed. Conclusion : Since the legal permission, the level and type of care coordination and the effects of them are needed to be checked. So, the measurement instrument driven by this study has a political signification in healthcare system specially in these times. In addition, by utilizing this instrument, we propose to perform a variety of future studies on the levels of healthcare coordination and related outcomes.

• Molecules and Cells
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• 제27권5호
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• pp.571-575
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• 2009

The amphetamine derivative 3, 4-methylenedioxymethamphetamine (MDMA) has become a popular recreational drug, and has also been shown to cause serotonergic neurotoxicity. This report shows that MDMA impairs brain development in a whole mouse embryo culture. The results of quantitative real-time PCR analysis showed that autophagy-related protein 5 (Atg5) expression is elevated in mouse embryo and neuroblastoma cells after MDMA treatment. This elevated Atg5 expression interferes with the neuronal differentiation of neuroblastoma cells such as SH-SY5Y and PC12 cells. Thus, our results suggest that the use of MDMA during pregnancy may impair neuronal development via an induction of Atg5 expression.

• Journal of Welding and Joining
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• 제32권4호
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• pp.55-62
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• 2014

The use of light-weight Al alloys in the automotive industry is increasing to meet requirements for fuel efficiency and emission reduction. Joining Al alloy to the conventional steel sheet is also very important issue with the increased use of Al alloy, and several joining processes have been introduced to enhance joining strength between dissimilar metals. This paper deals with a galvanic corrosion in the dissimilar metal joining. Salt spray tests up to 2000 hours were conducted on a self-piercing rivet, spot welded, adhesive bonded and weld-bonded joints, and cross-sections and tensile shear strength according the salt spray duration were analyzed at every 500-hour. Self-piercing rivet joint had relative low initial strength but the joint strength did not change regardless of the salt spray duration. The strength of other joints (spot welded, adhesive bonded and weld-bonded joints) decreased with the increase of salt spray duration and the corrosion behaviour of each joint was discussed.

• 복식문화연구
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• 제21권6호
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• pp.891-906
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• 2013

In this study, we identified the factors of perceived interactivity and verified the path model of effects of these factors on mobile fashion shopping purchase intention through perceived usefulness and perceived ease of use. To develop the conceptual model, we consulted the related precedent studies and searched various kinds of literatures. To verify the conceptual model, we conducted the survey targeting smartphone users in their 20s~30s and analyzed the structural equation model using AMOS 16.0. The results were as follows. Control, responsiveness and two-way communication, and contextual offer were identified as the factors of perceived interactivity. Perceived interactivity and perceived ease of use had positive effect on perceived usefulness. Perceived usefulness affected attitude toward purchase, and attitude toward purchase influenced positively on purchase intention. Perceived usefulness affected purchase intention directly as well as indirectly through attitude toward purchase. Based on the results, we proposed the marketing strategies for mobile fashion shopping businesses.

• 한국의류산업학회지
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• 제17권5호
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• pp.754-769
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• 2015

Global sourcing refers to activities performed to acquire materials, finished products and apparel production all around the world. The purposes of the study were to examine basic job requirements and primary skills of sales team and supporting team in global sourcing companies, to investigate educational programs provided by the companies or other educational institutions, and to examine courses to be newly established in the curriculum of clothing and textile majors. The results of the study found that the ability to use English and communication skills were important to perform their tasks (sales and supporting teams). The results revealed that fabric and textile, sewing, and apparel production process were the most frequently taken educational programs provided by global sourcing companies and English classes were the most frequently taken educational programs in the other educational institutions. The results also found that the clothing and textile curriculum need to add classes that help sales and supporting teams perform global sourcing tasks, such as fashion practical English, fabric and textile, apparel production processes, textile and apparel trades, fiber and fabric testing, and presentation skills. The study suggested educational directions for developing curriculum contents of clothing and textiles and cultivating professionals in the global sourcing industries.

• 대한예방한의학회지
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• 제19권3호
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• pp.57-66
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• 2015

Objective : Private health insurance coverage in Korean medicine has been reduced since October 2009 for preventing unnecessary utilization. The aim of this study is to identify how private health insurance coverage reduction affects on the Korean medicine utilization. Method : We analyzed the Korea Health Panel data from 2008 to 2012. Panel negative binominal regression model was used to analyze the relationship between private health insurance coverage reduction and utilization of outpatient service. Panel tobit regression analysis was used to identify the relationship between private health insurance coverage reduction and health expenditure of outpatient service. Results : Private health insurance coverage reduction significantly dropped both utilization and health expenditure of outpatient service by 9%, 9.22% respectively. In addition, therapeutic utilization significantly decreased up to 10%. Conclusion : Private health insurance coverage reduction seems to have an effect to reduce both utilization and the health expenditure of Korean medicine outpatient service. This effect was more noticeable in the therapeutic utilization. Thus, more elaborate policy will be needed to prevent unnecessary utilization of Korean medicine.

• 지역사회간호학회지
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• 제28권4호
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• pp.463-471
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• 2017

Purpose: This study aimed to identify the association between psychosocial work environment and depressive symptoms among Korean teachers. Methods: Data on 235 elementary school teachers and 341 middle and high school teachers was obtained from the 2014 Korean Working Condition Survey. The effect of psychosocial work environment on depressive symptoms was determined by multiple logistic regression analyses. Results: The prevalence of depressive symptoms was 18 % in elementary school teachers and 24 % in middle and high school teachers. When adjusted for demographics and other socio-psychological and environmental factors, 'social community at work' served as a protection factor for Korean teachers' depressive symptoms. In addition, 'cognitive demands' in elementary school teachers and 'social support from supervisors' in middle and high school teachers were found to be predictors of depressive symptoms. Conclusion: Interventions to increase 'social community at work' and 'social support from supervisors', and to decrease 'cognitive demands' may be helpful for Korean teachers at risk of depression.

• 한국지능시스템학회논문지
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• 제25권1호
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• pp.15-21
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• 2015

커널에 대한 모수의 조절은 서포트 벡터 기계의 일반화 능력에 영향을 준다. 이와 같이 모수들의 적절한 값을 결정하는 것은 종종 어려운 작업이 된다. 서포트 벡터 회귀에서 이와 같은 모수들의 값을 결정하기 위한 부담은 앙상블 학습을 사용함으로써 감소시킬 수 있다. 그러나 대용량의 자료에 대한 문제에 직접적으로 적용하기에는 일반적으로 시간 소모적인 방법이다. 본 논문에서 서포트 벡터 회귀의 모수 조절에 대한 부담을 감소하기 위하여 원래 자료집합을 유한개의 부분집합으로 분해하는 방법을 제안하였다. 제안하는 방법은 대용량의 자료들인 경우와 특히 불균등 자료 집합에서 효율적임을 보일 것이다.