• Journal of Korean Neurosurgical Society
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• 제63권5호
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• pp.598-606
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• 2020

Objective : The purpose of this study was to evaluate the impact of time interval between index event and stenting on the periprocedural risk of stenting for symptomatic carotid stenosis and to determine the optimal timing of stenting. Methods : This retrospective study included 491 (322 symptomatic [65.6%] and 169 asymptomatic [34.4%]) patients undergoing carotid stenting. The symptomatic patients were categorized into Day 0-3, 4-7, 8-10, 11-14, 15-21, and >21 groups according to the time interval between index event and stenting. Periprocedural (≤30 days) risk for clinical (any neurological deterioration) and radiological (new infarction on postprocedural diffusion-weighted imaging) events of stenting in each time interval versus asymptomatic stenosis was calculated with logistic regression analysis adjusted for confounders, and provided as odds ratio (OR) and 95% confidence interval (CI). Results : Overall clinical event rate (4.3%) of stenting for symptomatic carotid stenosis was higher than that for asymptomatic stenosis (1.2%; OR, 3.979 [95% CI, 1.093-14.489]; p=0.036). Stenting in Day 0-3 (13.2%; OR, 10.997 [95% CI, 2.333-51.826]; p=0.002) and Day 4-7 (8.3%; OR, 6.775 [95% CI, 1.382-33.227]; p=0.018) was associated with high risk for clinical events. However, the clinical event rates in stenting after 7 days from index event (Day 8-10, 1.8%; Day 11-14, 2.5%; Day 15-21, 0%; Day >21, 2.9%) were not different from that in stenting for asymptomatic stenosis. Overall radiological event rate (55.6%) in symptomatic stenosis was also higher than that in asymptomatic stenosis (35.5%; OR, 2.274 [95% CI, 1.553-3.352]; p<0.001). The high risk for radiological events was maintained in all time intervals (Day 0-3 : 55.3%; OR, 2.224 [95% CI, 1.103-4.627]; p=0.026; Day 4-7 : 58.3%; OR, 2.543 [95% CI, 1.329-4.949]; p=0.005; Day 8-10 : 53.6%; OR, 2.096 [95% CI, 1.138-3.889]; p=0.018; Day 11-14 : 57.5%; OR, 2.458 [95% CI, 1.225-5.021]; p=0.012; Day 15-21 : 55.6%; OR, 2.271 [95% CI, 1.099-4.764]; p=0.028; Day >21 : 54.8%; OR, 2.203 [95% CI, 1.342-3.641]; p=0.002). Conclusion : This study showed that as stenting was delayed, the periprocedural risk for clinical events decreased. The clinical event risk was high only in stenting within 7 days and comparable with that for asymptomatic stenosis in stenting after 7 days from index event, although the radiological event risk was not affected by stenting timing. Therefore, our results suggest that delayed stenting after 7 days from symptom onset is a safe strategy for symptomatic stenosis.

• Journal of Information Technology Applications and Management
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• 제20권1호
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• pp.43-51
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• 2013

Human being does work to live out and they have their private life because human has sociality. Both work and life are important to live out but they are on the trade-off relationship. Because keeping the balance between work and life is too hard, it has been interested by academic and practical areas. Definition of Work-life balance here is that balance or imbalance arising between work and life has no negative impact on their daily life. Above all, Work-life balance is important because it is strongly related to identity. Recently, the introduction of the mobile office system has emerged as a way to solve the problem of work-life balance. It is based on the teleworking which was formerly generated. Teleworking is to perform the work in the employee's home or office space set aside without going into the workplace. Concept of the mobile office system here is not only using portable devices during work for convenience but also the system which is designed for the performance. Thanks to the diffusion of smart devices(smart phone, tablet pc), mobile office system has been spread. Although the importance of mobile office systems is emerging, there are few researches about it. Even they mostly focus on the standpoint of performance of mobile office system. However, Quality of life is as important as the performance. As a part of Quality of Life field, Work-life balance is the closest to employee's quality of life. So this study aims to examine the effect of the use of mobile office systems on work-life balance. To do so, we try to find factors effecting Work-life balance from existing studies and then set a research model. We set the use of mobile office systems as independent variables which are divided by use of function, use by location and use by situation. There are four dependent variables - sense of self command, sense of balance, solving work problem, solving life problem. We collected data from employees who are using mobile office systems on their job. 215 people were participated in the survey and we used multiple regression analysis to verify our research model. Results show that every independent variable has no impact on solving work problem while they have slight impact on the other dependent variables. Especially use on the business trip has significant effect on dependent variables. It means that there is a possibility use of mobile office system could control the employee's quality of life and system should be evolved until it covers even critical tasks. Also, support for mobile office system -education, encouragement-should be provided. By mobile office system is maturing, future research would be done.

• 유통과학연구
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• 제13권7호
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• pp.63-71
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• 2015

Purpose - The characteristics of the modern management environment in Korea clearly involve the limitations of knowledge management, globalization, changes in industrial structures, polarization of the economy, consumption, and education, and the demand for creative management. To achieve a continuous competitive advantage for individuals as well as organizations, Wisdom Management can be said to be a paradigm for the current environment. The Research is an alternative to environmental management in the early study of the need to conceptualize the theoretical approach to wisdom management. In other words, it presents a new management paradigm for a business environment of uncertainty and unpredictability. Furthermore, it aims to propose Wisdom Management as an alternative in the modern management environment as well as a topic of discourse. Its purpose is to provide basic knowledge to people who study and practice in this field to strengthen the competitiveness of individuals and companies. Research design, data, and methodology - This paper first provides six characteristics of the current management environment at home and abroad. It then attempts to emphasize the necessity of wisdom based on such characteristics by classifying wisdom according to recent management study research. This allows the derivation of definitions of wisdom management, suggesting its components and properties. Results - The six characteristics of the modern business environment are: 1) limits of knowledge, 2) intensifying globalized competition, 3) changes in industry structure - IoT (Internet of all Things) trend, 4) serious polarization and social unrest diffusion, 5) personal and organizational competitiveness creativity requirements, and 6) domestic special national and social situations. Therefore, accordingly, wisdom can be defined and classified as: wisdom that offers potential integration beyond knowledge, practicing and maintaining knowledge wisdom as an efficient strategy for an organization wisdom as a decision-making process that addresses ambivalence wisdom as the pursuit of common goods based on ethics; and, wisdom as creativity that involves intuition and insight. This paper attempts to define Wisdom Management in accordance with these definitions of wisdom. Wisdom Management is a management system that is awareof the current environment given in the multidimensional perspective, achieves the efficiency of the organization and the goals of common good through an uncertain decision-making process, based on the organization of individual and organizational knowledge, and the internal experiences and resources. Wisdom Management components include human beings, virtue, knowledge, creativity, and ambivalent thinking. Its properties include intentionality, self-destructiveness, creative and ethical reflexivity, complexity, insight, unpredictability, ambivalence, and wholeness. Conclusions - Since all organizations face the limitations of their environment, crises, and opportunities, applying wisdom in management to develop as Wisdom Management can be an inevitable alternative to the uncertainties of the management environment faced by modern society. The conceptualization of Wisdom Management forms a valuable context to further advance knowledge management theory into practice. It is also a cornerstone of strategic management and can provide insight into its potential for success and implementation.

• 한국재료학회:학술대회논문집
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• 한국재료학회 2012년도 춘계학술발표대회
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• pp.72-72
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• 2012

Lithium rechargeable batteries have been widely used as key power sources for portable devices for the last couple of decades. Their high energy density and power have allowed the proliferation of ever more complex portable devices such as cellular phones, laptops and PDA's. For larger scale applications, such as batteries in plug-in hybrid electric vehicles (PHEV) or power tools, higher standards of the battery, especially in term of the rate (power) capability and energy density, are required. In PHEV, the materials in the rechargeable battery must be able to charge and discharge (power capability) with sufficient speed to take advantage of regenerative braking and give the desirable power to accelerate the car. The driving mileage of the electric car is simply a function of the energy density of the batteries. Since the successful launch of recent Ni-MH (Nickel Metal Hydride)-based HEVs (Hybrid Electric Vehicles) in the market, there has been intense demand for the high power-capable Li battery with higher energy density and reduced cost to make HEV vehicles more efficient and reduce emissions. However, current Li rechargeable battery technology has to improve significantly to meet the requirements for HEV applications not to mention PHEV. In an effort to design and develop an advanced electrode material with high power and energy for Li rechargeable batteries, we approached to this in two different length scales - Atomic and Nano engineering of materials. In the atomic design of electrode materials, we have combined theoretical investigation using ab initio calculations with experimental realization. Based on fundamental understanding on Li diffusion, polaronic conduction, operating potential, electronic structure and atomic bonding nature of electrode materials by theoretical calculations, we could identify and define the problems of existing electrode materials, suggest possible strategy and experimentally improve the electrochemical property. This approach often leads to a design of completely new compounds with new crystal structures. In this seminar, I will talk about two examples of electrode material study under this approach; $LiNi_{0.5}Mn_{0.5}O_2$ based layered materials and olivine based multi-component systems. In the other scale of approach; nano engineering; the morphology of electrode materials are controlled in nano scales to explore new electrochemical properties arising from the limited length scales and nano scale electrode architecture. Power, energy and cycle stability are demonstrated to be sensitively affected by electrode architecture in nano scales. This part of story will be only given summarized in the talk.

• 스마트미디어저널
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• 제9권1호
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• pp.75-83
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• 2020

대규모 공익사업 중에 필수불가결하게 발생하는 보상업무는 최근 공사가 늘어남에 따라 점차 규모가 늘어나고 있으나 절차가 복잡하고 수작업으로 관련 작업을 진행하고 있어 체계적인 보상업무가 이루어지고 있지 않은 실정이다. 이 때문에 다양한 민원 발생으로 인한 공기지연, 보상업무 관련 비리 존재, 과거 보상자료 이력 추적 불가 등 다양한 문제들이 나타나고 있다. 본 논문에서는 이를 해결하기 위해 전문가 심층 면담 및 설문 등을 통해 보상현황 단계별 문제점을 도출하였고 이를 근간으로 STEEP 분석 및 Issue Tree를 도출하여 보상업무를 첨단화 할 수 있는 ICT 기반 3대 핵심기술 및 10개의 기술니즈를 선정하였다. 선정된 3대 핵심기술은 빅데이터 기반 의사결정 및 예측기술, 최신 계측장비 기반의 첨단화기술, 개방형 클라우드 기반 보상플랫폼 기술이다. 도출된 기술을 보상업무를 진행하고 있는 기관에 도입하기 위해 기관별 정보화 현황 조사결과를 근간으로 사업시행자별 기술 확산 가능성을 제시하였다. 향후 본 논문에서 도출된 핵심기술을 근간으로 보상업무 첨단화가 가능한 프로토타입을 제작하여 기관별로 적용하고 이에 대한 효과분석을 진행하는 것이 필요하리라 판단된다.

• 한국융합학회논문지
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• 제8권7호
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• pp.151-158
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• 2017

본 연구는 대학 교수-학습의 주체자인 학생과 교수의 온라인 대중공개강좌(MOOC)에 대한 인식에 기초하여 개발 및 활용 전략을 탐색한 것이다. 대학 구성원 모두 MOOC의 기본 개념인 개방, 공유, 참여에 대해 긍정적으로 인식하였으며, MOOC에 대한 이해와 인식 수준은 학부생과 대학원생이 매우 낮은 반면 교수는 그에 비해 상대적으로 높았다. 대학 교육과정의 혁신과 고유 콘텐츠의 확산 목적의 MOOC이 인문학, 자연과학, 사회과학, 기술공학, 예체능 영역의 강좌가 개발되길 원했다. 대학의 학습 주체자인 학부생들은 MOOC이 교양 교육과정 이수나타분야 기초 학습, 비교과 과정으로 이수할 수 있길 원했고, 평생 학습자인 대학원생은 지역시민의 평생교육 강화를 위해 MOOC이 개발 활용되길 원했다. 고품질 교육의 제공자이자 평생 학습자인 교수는 대학교육의 혁신과 고유 콘텐츠의 확산을 목적으로 해당 전공 과정의 심화학습에 MOOC이 활용되기를 원했다. 앞으로 대학은 다양한 MOOC 개발을 지원하고 이수체계를 정립하여 고도화된 고품질 온라인 교육 서비스를 제공해야 할 것이다.

• 경영과정보연구
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• 제36권2호
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• pp.207-221
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• 2017

경력단절 여성은 NCS기반의 직업훈련과 개인중심의 경력관리라는 새로운 패러다임에 직면해 있다. 경력단절 여성이 이런 환경변화에 적응하기 위해서는 경력관리에 대한 자기주도성과 정체성이 요구된다. 특히, 경력단절 여성에 대한 다양한 지원프로그램이나 직업교육의 실효성을 높이기 위해서는 획일화된 관점에서 벗어나 세분화된 집단별 특성을 파악하는 것이 필요하다. 이런 맥락에서 본 연구는 재취업에 성공한 경력단절 여성의 적극적 경력관리행동에 초점을 맞춘다. 경력단절 여성의 적극적 경력관리행동이 경력전략과 경력성공과 어떤 관련성이 있는지를 밝힌다. 이를 위해 한국직업능력개발원에서 실시한 패널자료를 토대로 적극적 경력관리 여성과 일반 경력관리 여성으로 구분하여 이들 두 집단 간 경력관리 행동과 경력성공에 차이가 있는지를 실증하였다. 적극적 경력관리 여성일수록 경력전략으로 경력단절이나 경력이동을 활용하는 것으로 나타났다. 또한, 적극적 경력관리 여성과 그렇지 않는 여성간 자기주도적 교육 참여정도와 훈련방법에 따른 교육효과에 차이가 있는 것으로 조사되었다. 둘째, 적극적 경력관리 여성은 그렇지 않는 경우에 비해 월평균임금이 통계적으로 유의한 수준에서 높은 것으로 나타났다.

• 동아시아경상학회지
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• 제5권4호
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• pp.39-49
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• 2017

Purpose - This study is to propose a creative idea for constant business growth and development by examining characteristics of business outcomes by phase, which are "growth" and "erosion and stagnation," respectively. Research design, data, methodology - It is necessary to identify an occurrence of crisis and its diffusion with a dynamic model in order to identify a success and failure of businesses in an organic way, not on a binary structure. The static perspective is to understand a crisis as a simply one-time event or as a linear causation. Thus, it has a limited understanding of the overall situation and has limits to investigating a foundational cause and developing long-term countermeasures. On the contrary, the dynamic perspective is to understand the crisis as circulation process of the overall system. Thus, it divides elements of the crisis as external and internal ones to understand it as the causal relationship of each element. Results - During the growth period of Burger King, the company promoted its brand very successfully with aggressive and creative marketing activities. However, due to the founder's disposal of management rights and the following changes in the management, the company had no choice but to lose focus on its business philosophy and brand management, and eventually it had to face the big crisis (resonance) which was delisting from the stock market because of the external threat; well-being trend. However, Burger King resumed lifting on the stock exchange by making great efforts to clearly identify the current issues and seek solutions. Under the spirit of "perseverance" and its slogan "Have it your way" the company is now going head to head with McDonald's in the North American region and emerging countries. Conclusions - Then, what is the most crucial factor in the success and failure of businesses? Answers may vary, however, as learned from the case study of Burger King, corporations should inspect the present and focus on developing a long-term strategy for the future and actively fulfill the actions. McDonald's may not be able to innovate by itself in the future as it may become routinized to the growth. There will be chances of winning if we change conditions of individuals or organizations to an organic system in terms of being creative. There is a hopeful message here that an individual or small business may have more advantages in the era of the idea and innovation.

• 기술혁신학회지
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• 제22권2호
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• pp.242-264
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• 2019

본 연구는 빠르게 확산되고 있는 인공지능 기반 서비스에 대한 사용자들의 수용 의도에 영향을 주는 요인을 분석하는 연구이다. 구체적으로는, 본 연구는 인공지능 기반 서비스의 사용자들의 수용 의도에 영향을 주는 요인 중, TAM, UTAUT 기반 연구와 같은 기존의 선행 연구들이 제시한 바 있는 쾌락적 동기, 실용적 동기와 함께, 인공지능 기반 서비스의 사용 안전성에 대한 사용자 인식, 이들 서비스의 필요성을 강조하는 시대적 압박, 서비스의 혁신성과 서비스의 체험 경험 등의 요인들이 주는 직 간접적인 영향을 집중적으로 분석한다. 분석 결과, 제시된 요인들은 A.I. 스피커에 대한 소비자의 사용 의도에 유의미한 영향을 미치는 것으로 나타났다. 보다 구체적으로는, 기존에 다양한 연구에서 제시되어 온 TAM, UTAUT모형에서 제시되어온 편의성과 쾌락적/실용적 동기가 A.I. 스피커로 대표되는 지능형 서비스의 사용자 수용 의도에도 유의미한 요인임을 증명하였다. 이와 함께, 기존에는 소수의 연구에서만 고려되었던 시대적 압박이라는 비자발적 영향 요인이 지능형 서비스를 포함한 IT융합형 서비스의 수용 의도에 유의미한 영향력을 나타내었으며, 이러한 서비스에 대한 사용자의 보안성 인지와 지능형 서비스(A.I. 스피커)의 실제 경험 여부 또한 중요한 영향요인으로 제시되었다.

• 중소기업연구
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• 제42권2호
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• pp.117-137
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• 2020

본 논문은 현재 중소기업을 대상으로 추진 중인 스마트공장 보급·확산사업의 현황을 진단하고, 중소기업 관점에서 중소기업 제조 혁신을 위한 발전 방향을 모색한다. 본 논문의 주요 결론은 다음과 같다. 첫째, 스마트공장 보급·확산사업은 추가적인 시장 창출과 공급망 개선을 전제로 추진되어야 한다. 둘째, 스마트공장 보급·확산사업은 "생산·공정"의 효율화를 넘어 "R&D"나 "판로"와 연계되는 새로운 사업을 창출하는 것을 지향해야 한다. 셋째, 공정기술이 기업 경쟁력으로 직결될 수 있는 분야를 중심으로 스마트공장 구축을 우선 지원할 필요가 있다. 본 논문에서는 미국의 제조혁신연구소(Manufacturing Innovation Institute)의 사례를 참조하고, Pisano and Shih (2012)의 제품·프로세스 혁신 프레임워크를 사용하여 다음 네 가지 정책과제를 제시한다. 첫째, 스마트공장 추진 전략을 양적 확산 위주에서 질적 고도화로 전환한다. 둘째, 각 업종별로 중견·중소기업 중심의 공통기술개발과 표준화된 데이터 교환 및 업무교류 시스템 구축, 납품업체 중심의 조달시스템 운영 등을 추진한다. 셋째, 신기술·신사업 모델의 구현을 위해 기존 중소기업과 창업·벤처기업과의 제휴 및 협업, M&A를 장려한다. 넷째, 스마트공장의 세부 항목을 지수화하여 스마트공장 보급 전략의 적절성과 정책 지원의 문제점을 신속히 파악하고 보완한다.