Lithium-ion batteries (LIBs) are powerful energy storage devices with several advantages, including high energy density, large voltage window, high cycling stability, and eco-friendliness. However, demand for ultrafast charge/discharge performance is increasing, and many improvements are needed in the electrode which contains the carbon-based active material. Among LIB electrode components, the conductive additive plays an important role, connecting the active materials and enhancing charge transfer within the electrode. This impacts electrical and ionic conductivity, electrical resistance, and the density of the electrode. Therefore, to increase ultrafast cycling performance by enhancing the electrical conductivity and density of the electrode, we complexed Ketjen black and graphene and applied conductive agents. This electrode, with the composite conductive additives, exhibited high electrical conductivity (12.11 S/cm), excellent high-rate performance (28.6 mAh/g at current density of 3,000 mA/g), and great long-term cycling stability at high current density (88.7 % after 500 cycles at current density of 3,000 mA/g). This excellent high-rate performance with cycling stability is attributed to the increased electrical conductivity, due to the increased amount of graphene, which has high intrinsic electrical conductivity, and the high density of the electrode.

Tungsten disulfide (WS2), a typical 2D layerd structure, has received much attention as a pseudocapacitive material because of its high theoretical specific capacity and excellent ion diffusion kinetics. However, WS2 has critical limits such as poor long-term cycling stability owing to its large volume expansion during cycling and low electrical conductivity. Therefore, to increase the high-rate performance and cycling stability for pseudocapacitors, well-dispersed WS2 nanoparticles embedded in carbon nanofibers (WS2-CNFs), including mesopores and S-doping, are prepared by hydrothermal synthesis and sulfurizaiton. These unique nanocomposite electrodes exhibit a high specific capacity (159.6 F g−1 at 10 mV s−1), excellent high-rate performance (81.3 F g−1 at 300 mV s−1), and long-term cycling stability (55.9% after 1,000 cycles at 100 mV s−1). The increased specific capacity is attributed to well-dispersed WS2 nanoparticles embedded in CNFs that the enlarge active area; the increased high-rate performance is contributed by reduced ion diffusion pathway due to mesoporous CNFs and improved electrical conductivity due to S-doped CNFs; the long-term cycling stability is attributed to the CNFs matrix including WS2 nanoparticles, which effectively prevent large volume expansion.

Because of their excellent stability and highly specific surface area, carbon based materials have received attention as electrode materials of electrical double-layer capacitors(EDLCs). Biomass based carbon materials have been studied for electrode materials of EDLCs; these materials have low capacitance and high-rate performance. We fabricated tofu based porous activated carbon by polymer dissolution reaction and KOH activation. The activated porous carbon(APC-15), which has an optimum condition of 15 wt%, has a high specific surface area(1,296.1 m2 g−1), an increased average pore diameter(2.3194 nm), and a high mesopore distribution(32.4 %), as well as increased surface functional groups. In addition, APC has a high specific capacitance(195 F g−1) at low current density of 0.1 A g−1 and excellent specific capacitance(164 F g−1) at high current density of 2.0 A g−1. Due to the increased specific surface area, volume ratio of mesopores, and surface functional groups, the specific capacitance and high-rate performance increased. Consequently, the tofu based activated porous carbon can be proposed as an electrode material for high-performance EDLCs.

Recently, creative innovation has become a major topic in management innovation and due to this, various researches on its need and methodologies are being performed. According to previous studies on ambidexterity, explorative innovation is closer to divergent and right-sided brain, while exploitative innovation is closer to convergent and left-sided brain. Five attributes of the questionnaires were developed based on right-sided and left-sided brain theory. Also, 25 problem solving tools were selected according to previous studies. QC 7 Tools and new QC 7 Tools were frequently used in Six Sigma projects. Other 11 problem solving tools were selected with consideration on its usage frequency. Survey questionnaires were distributed to 25 Six Sigma consultants and 22 were retrieved for this study's use. As a result, 14 tools were identified to hold exploitative attribute while 11 tools were identified to hold explorative attributes.

Recently, creative innovation has become a major topic in management innovation and due to this, various researches on its need and methodologies are being performed. According to previous studies on ambidexterity, explorative innovation is closer to divergent and right-sided brain, while exploitative innovation is closer to convergent and left-sided brain. Topic was to identify preceding element which affects Ambidextrous Innovation. For this topic, 129 Six Sigma projects from 19 different companies were collected. Ambidextrous index from preceding studies was used. This index represents the degree of ambidextrous activation and can be calculated by multiplying cumulative usage of exploitative tools with that of explorative tools. In the project characteristics, simple linear regression result showed leadership degree, team’s vitalization degree and leader capability degree have effect in positive direction.

Since six sigma program was first introduced in late 1990's, it has been evolved in Korea. The number of six sigma adopting company are getting increased and diversify manufacturing, service, government. In these days, the rapid innovation of internet technology change the media industry's game rule. This paper is concerned with a six sigma applications to internet media portal service company. The main focus of this study is to introduce an empirical study on the implementation of DMAIC procedures for internet media portal service company.

Global financial crisis at 2008 bring about the great change to the company itself and its environment. In these days, the company needs change to the ambidextrous organization, which have more efficiency processes also have more attractive products and services. Ambidextrous organization purse exploiting and exploration innovation program. For the existing process's incremental and rapid improvement, the exploiting innovation programs are used such as 6 Sigma program and so on. For the new business model's searching and developments, the exploration innovation programs are used such as blue ocean program and brainstorming and so on. In this paper is presented the new procedures, for the new business model development, combining exploration and exploiting innovation programs. To obtain the creative business ideas, various exploration methodologies are adopted based on 6 Sigma's methodology, The new procedures are applied to the venture company and examined its validity.

Global financial crisis at 2008 caused a great change of the company itself and environment as hit product, new creative business model. But it is not easy program. Ambidextrous organization excel at exploiting existing products to enable incremental innovation and at exploring new opportunities fo foster more radical innovation. In this paper are presented the improved procedures of new business model development using 6 sigma methodology. To inspired about new business ideas we use exploration method. To eliminate project's waste we use exploitation method such as 6sigma methodology. The main object of this study is to introduce an empirical study on DIDOV.

Today, many of communication methods based on print media traditionally has moved to the internet. As increase of interest in internet business, effective web site design is needed. While the researches for the evaluation of completed web site are increased, that of web site design procedures are rare. In the design process occur various problems : rework, delay, etc.. In this paper are presented the improved procedures of web site design using 6 sigma methodology. The main object of this study is to introduce an empirical study on DIDOV.

Since six sigma program was first introduced in late 1990's, it has been evolved in Korea. The number of six sigma adopting company are getting increased and diversify manufacturing, service, government. In these days, the rapid innovation of internet technology change the media industry's game rule. This paper is concerned with a six sigma applications to internet media portal service company. The main focus of this study is to introduce an empirical study on the implementation of DMAIC procedures for internet media portal service company.

Since six sigma program was first introduced in late 1990's, it has been evolved in Korea. The number of six sigma adopting company are getting increased and diversify manufacturing, service, government. In these days, the rapid innovation of internet technology change the media industry's game rule. This paper is concerned with a six sigma applications to internet media portal service company. The main focus of this study is to introduce an empirical case study on the implementation of DMAIC procedures for internet media portal service company.

우리나라는 예전부터 쌀 생산의 명승지였으며 국민은 벼농사를 주요생업으로 삼아 왔기 때문에 자연히 쌀을 원료로 한 술이 나오게 된 것은 당연한 이치이다. 탁주는 일반인이 아는 바와 같이 쌀과 누룩으로 제조한 것이 전통 민속주라 할 수 있겠다. 일제시대에 들어와 1920년경에 일본에서 종국을 들여와 청주제조 및 조미료 제조에 약간씩 이용되었고 해방을 전 후하여 탁 약주에 널리 보급되기 시작하였다. 근대의 탁 약주 출고 및 원료의 변천을 보면 1. 1960년대부터 매년 출고량이 신장되어 왔으며 1973년도 출고량 1,613,147kl가 출고되어 전주류 구성비율은 78.6% 이상에 이르게 되었으나, 2. 1974년부터 1975년(2년간) 사이에 원료변화가 4차례나 바뀌어짐에 따라 1974년도에 소맥 50%, 대맥(보리쌀)50%를 사용하면서부터 출고량이 감소되기 시작하였다. 3. 1988년말 현재에 이르러 출고량은 761,284kl로 53%가 감소되었고 주류 구성비율은 30%내로 이르게 되었다. 우리나라 국민은 누구나 민속주 하면 탁주를 연상한다. 그러나 정부의 식량난 정책에 따라 탁 약주 제조원료 변화는 갖은 수난을 거쳐 오늘에 이르게 되었으나 이제는 경제가 발전되어 국민의 의 식 주도 많이 변화되어지고 있는 바 지난날과 같은 원료변화는 다시는 없어야겠다. 끝으로 탁 약주 제조자의 바램이라면 제조원료를 자유롭게 선택하여 상품을 다양화하고 소비자의 선택에 따라 전통 민속주의 맛을 음미할 수 있는 때가 오기를 바란다.