• Proceedings of the Korean Ceranic Society Conference
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• 2003.04a
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• pp.231.1-231
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• 2003

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.21 no.2
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• pp.118-125
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• 2008

Single walled carbon nanotubes (SWCNTs) can be modified to produce a new concept of hybrid materials by introducing atoms or molecules inside their cylindrical empty space. Such an endohedral doping of the SWCNTs is expected to decisively alter their electronic transport and mechanical properties, In this study, we purified SWCNTs by three-step purification processes and formed the peapod structure by introducing $C_{60}$ fullerenes inside the SWCNTs. $C_{60}$ molecules were observed to be regularly arranged by transmission electron microscopy. In Raman spectra, the radial breathing mode (RBM) rather than the other modes was significantly affected by the endohedral injection of $C_{60}$. The RBM intensity was more greatly reduced in the large-diameter SWCNTs than the small-diameter ones, Raman spectroscopy is expected to be a key technique for analyzing $C_{60}$-encapsulated SWCNTs.

• Transactions on Electrical and Electronic Materials
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• v.5 no.6
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• pp.227-232
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• 2004

We investigated a nonvolatile nanomemory element based on boron nitride nanopeapods using molecular dynamics simulations. The studied system was composed of two boron-nitride nanotubes filled Cu electrodes and fully ionized endo-fullerenes. The two boron-nitride nanotubes were placed face to face and the endo-fullerenes came and went between the two boron-nitride nanotubes under alternatively applied force fields. Since the endo-fullerenes encapsulated in the boron-nitride nanotubes hardly escape from the boron-nitride nanotubes, the studied system can be considered to be a nonvolatile memory device. The minimum potential energies of the memory element were found near the fullerenes attached copper electrodes and the activation energy barrier was $3{\cdot}579 eV$. Several switching processes were investigated for external force fields using molecular dynamics simulations. The bit flips were achieved from the external force field of above $3.579 eV/{\AA}$.

• The Journal of Fisheries Business Administration
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• v.37 no.1 s.70
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• pp.111-120
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• 2006

식품관련 시장조사 기관인 Food marketing Instittue에 따르면, 미국전체의 식료품체인 가운데 25%가 최소한 온라인 쇼핑을 운영하고 있다. Safeway, Albertsons 등 대형 수퍼마켓 체인들이 연이어 온라인 시장에 참가했고, Melon Seed, FreshDirect.com 등 신규업체도 참가했다. 2002년 5월 Safeway.cm을 설립한 Safeway는 동년 7월에 8번째 점포를 시애틀에 오픈하는 등, 온라인 비즈니스를 확대했다. 최근 할인매장, 드러그 스토어 둥에 일부 시장을 잠식당하고 있는 이들 전통적인 수퍼마켓 체인들은 고객의 이탈을 막기 위해 비록 소수이기는 하지만 고객의 온라인 수요에 대응할 필요성이 있다고 생각하기 때문이다. 본고의 목적은 미국의 식료품 온라인 쇼핑에서 발생하고 있는 여러 문제점을 지적하는 것이다. Webvan이 Dot Com의 실패를 예증하는데 사용되는 주요한 전자상거래 비즈니스이다. 오늘날 온라인 쇼핑 비즈니스의 도전을 보여주고 이익을 낳기 위해 취해야 할 조치를 논의하기 위해 온라인 쇼핑 밴더가 참조되고 있다. 또한 본고는 미국의 Vons.com, Peapod.com 그리고 Safeway.com과 같은 온라인 식료품 쇼핑 비즈니스에서 나타나고 있는 추세, 신규 영업자 및 잔존 영업자들의 특성과 온라인 식료품 쇼핑업자들의 성장에 필요한 요인들에 관해서도 논하였다.

• International Commerce and Information Review
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• v.13 no.3
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• pp.169-201
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• 2011

There was a new wave in grocery business with development of information and technology, thus a movement from traditional stores to online stores, In order to expand the scale of traditional supermarket and to satisfy the customers' needs, they provide offline and online services simultaneously. This paper is based on the previous studies which had been researched in developed countries from late 1990s to early 2000s and the purpose of this study is to introduce the idea and operation system of e-Grocery business. Moreover, we suggest the alternatives on delivery service methods in order to satisfy the customers' needs through analyzing the current condition of e-Grocers in Korea. According to the result of this study, Korean e-Grocers offer only attended home delivery services. In our opinion, Korean supermarkets have to take hybrid model which Tesco.com is using. There are some alternatives to increase the profits of Korean e-Grocers and to provide better services to their customers as follows: As an alternatives for delivery services, picking service is the easiest and cheapest way to apply for supermarkets. This is very useful for working women and also it is possible to order by smartphone recently. They can order the goods to the closest local supermarkets from working place, and then they pick them up on the way home from working off. In order to improve the quality of delivery services, to use the reception box will be the way to provide better services to the customers. The reception box is a way to protect the quality of goods such as fresh-cut product, which require the freshness through the temperature adjustment, and also to keep the safety of ordered goods through locking system Through this system, supermarkets are able to use attended or unattended services under the customers' satisfaction. However, using the reception box is expensive, so shared reception box will be an alternative. As an alternative for development of e-Grocery business, the advertisement for e-Grocery business has to be supported in order to attract potential customers in e-Grocery business. Furthermore, the main concerns of e-Grocery business such as the sanitation and safety of goods, and convenience must be guaranteed in order to keep the loyal customers and to attract new customers.