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

• Proceedings of the KIEE Conference
• /
• 2009.07a
• /
• pp.1215_1216
• /
• 2009

Most transformer use insulating and cooling fluids derived from petroleum crude oil, but mineral oil is some possibility of environmental pollution and fire with explosion. vegetable oil fluids extracted from seed has superior biodegradation and fire-resistant properties including an exceptionally high fire point enhancing fire safety. In this study, it is aimed at the practicality of substituting natural ester dielectric fluid for mineral oil in liquid insulation system of transformers. As a rise in coil winding temperature has a direct influence on transformer life time, it is important to evaluate the temperature rise of coil winding in vegetable oil in comparison with mineral oil. Three transformers for the test are designed with 10KVA, 13.2KV, one phase unit. The temperature are directly measured in insulating oil of these transformers with the two sorts of natural ester and mineral oil dielectric fluid respectively. Temperature of vegetable oil transformers was similar to temperature of mineral oil transformer in the same design at 80% load and above.

• International Journal of Industrial Entomology and Biomaterials
• /
• v.6 no.2
• /
• pp.115-123
• /
• 2003

Oviposition and egg laying is an important physiological and behavioural event in the life cycle of the silkworm, Bombyx mori (L). Oviposition and egg laying is dependent on a number of intrinsic and extrinsic factors viz., neural, hormonal, environmental, physical, behavioral etc for the perpetuation of population. Although, the virgin female moths have fully developed embryos but active egg laying begins under the influence of mating which provides essential copulation stimulus for oviposition. After mating drastic biochemical changes occurred that incites egg laying under the influence of optimum environmental conditions. Weight of pupae as well as larval density has significant role on oviposition and egg laying behaviour in the silkworm wherein high pupal weight and inadequate rearing space affects not only the biology, morphology and physiology but also the oviposition and egg laying. Surface topography, plane of inclination, mating length, age of male moth, temperature and photoperiod etc has significant effect on reproductive physiology of silkworm. An attempt has been made in this review article to elucidate briefly the works carried out on mating behaviour, direct and indirect copulation stimulus, vitellogenesis, influence of environmental factors besides effect of weight of pupae and or pharate adult and larval density on oviposition and egg laying behavior in the silkworm, B. mori and its significance in silkworm seed production.

• Proceedings of the Plant Resources Society of Korea Conference
• /
• 2003.10b
• /
• pp.47-47
• /
• 2003

Plant growth promoting rhizobacteria (PGPR) have been shown to suppress phytopthora blight. This suppression has been related to both microbial antagonism and induced resistance. The PGPR isolates were screened by dual culture plate method and most of the isolates were showed varyinglevels of antagonism. Among the PGPR isolates pyoverdin, pyochelin and salicylic acid producing strains showed the maximum inhibition of mycelial growth of Phytophthora capsici and increased plant growth promotion in red pepper. PGPR isolatesfurther analysed for its ability to induce production of defence related enzymes and chemicals. The activities such as Phenyle alanin ammonia lyase (PAL), Peroxidase (PO), Polyphenol oxidase (PPO) and accumulation of phenolics were observed in PGPR pretreated red pepper plants challenged with Phytophthora capsici. The present study shows that an addition of direct antagonism and plant growth promotion, induction of defense related enzymes involved to enhance resistance against invasion of P. capsici in red pepper.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.32 no.9
• /
• pp.754-760
• /
• 2008

A two-photon induced photoreduction process suggests a possibility for fabricating complicated metallic microstructures which can be applied to 3-D micro-circuits and optical devices, etc. The process employs the photoreduction of silver ions in a metallic solution which is composed of metallic salt ($AgNO_3$) and watersoluble polymer ((poly(4-styrenesulfonique acid) 18wt. % in $H_2O$, $(C_8H_8O_3S)_n$)). In this process, the improvement of the resolution and the uniformity of fabricated metallic structures are important issues. To address these problems, continuous forming window (CFW) is obtained from a parametric study on the conditions of laser power and scanning velocity and the direct seed generation (DSG) method is proposed. Silver nano particles are uniformly generated in a metallic solution through the DSG method, which enables the decrease of a laser power to trigger the photoreduction of silver ions as well as the increase of metal contents in a metallic solution. So the two-photon induced photoreduction property of a metallic solution is improved. Through this work, precise silver patterns are fabricated with a minimum line width of 400 nm.

• Asian-Australasian Journal of Animal Sciences
• /
• v.16 no.8
• /
• pp.1126-1130
• /
• 2003

The conditions of measurement for the determination of bulk density were evaluated to assess the bulkiness of 8 kinds of forage. The bulkiness of the forages was determined with 4 different sizes of forage samples with 7 different pressure application under air-dry and wet conditions. The dry bulk density (DBD) curvilinearly regressed with the pressure applied. The particle size of the samples and kinds of forage used in the present study did not affect changes in values of DBD determined under pressures over $20g/cm^2$ up to $200g/cm^2$. The values of the wet bulk density (WBD) increased as an increment of particle size, but were not always regressed on the particle size of the 8 kinds of forage. The DBD determined on 8 mm particles showed a higher correlation coefficient with neutral detergent fiber (NDF) contents. The DBD may be a useful tool for the assessment of NDF in forage, when it is determined under condition of a pressure of $100g/cm^2$ or over with a particle size of 8 mm. The WBD may not be utilized for the direct measurement of the physical characteristics of forage, but may be required a thorough consideration on water solubility of forages. Further studies are needed to clarify the DBD contribution to the prediction of forage intake by ruminants.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.3 no.3
• /
• pp.203-209
• /
• 2002

The Korean venture industry showed a rapid growth due to various government incentive measures, development in information technology, and explosive growth of the KOSDAQ market. Recently, however, the Korean venture industry has revealed numerous side effects, which seemed to be coming from excessively aggressive government involvement in the industry, and fallen into a deep depression. This phenomenon may imply that the Korean venture industry has been established by the government policy rather than based on the venture capital market, whereas the venture industry in advanced nations has grown up autogenously based on it. This paper analyzes the Korean venture capital market and suggests policy recommendations to revitalize the domestic venture capital market. They include facilitating the supply of funds through limited partnerships and overseas venture capital, extending the direct equity investment, and actively promoting the KOSDAQ market.

• Korean Journal of Plant Taxonomy
• /
• v.49 no.4
• /
• pp.275-281
• /
• 2019

One key step in the plant restoration process is the collection of seeds from the field. For the selection of source populations of target plant species for translocation purposes (reintroduction or reinforcements), several approaches are possible. A practical method involves the use of data from reciprocal transplant studies. If no direct data are available, knowledge of population genetics and the phylogeography of the target species can serve as an alternative. In this short review, we briefly propose guidelines for those collecting seeds for plant species restoration based on population genetics theory, focusing on two main questions: Where does the plant material come from and how are sources designated, and how are seeds efficiently collected from local populations? While genetic data on a larger scale (phylogeography and population genetics) are needed to form a reply to the first question, similar data on a smaller scale (fine-scale genetic structures within populations) are necessary to shed light on the second issue.

• Korean Journal of Medicinal Crop Science
• /
• v.13 no.6
• /
• pp.273-277
• /
• 2005

Adventitious shoots were directly induced from leaf explants of R. glutinosa, an important medicinal plant. Proliferating shoot cultures were obtained by culturing leaf discs on Murashige and Skoog(MS) medium alone or combination with auxins and cytokinins. MS medium supplemented with 1 $mg/{\ell}\;BA\;and\;2\;mg/{\ell}$ IAA was the most effective, providing high shoot bud formation frequency without formation of intervening callus. The effect of leaf age on adventitious shoot formation was also investigated. The maximum shoot bud production (93.4%) was achived using 3rd leaf from apex of 6 weeks old plantlets after seed germination. Plantlet were rooted on an half-strength MS (1/2MS) medium containing 0.1 $mg/{\ell}\;IBA$. This prtocol is useful for clonal propagation and Agrobacterium-mediated transforamtion in R. glutinosa.

• KOREAN JOURNAL OF CROP SCIENCE
• /
• v.28 no.2
• /
• pp.240-247
• /
• 1983

Heritability of flowering date, length of main stem, weight of 100 grains and number of shells per square meter in peanut were high with low local variation. There was positive genotypic correlation between length of main stem and yield, No. of shells per square meter and matured seed ratio, No of shells per square meter and yield 100 grain weight and yield but was negative genotypic correlation between flowering date and yield. With the view of path-coefficients, length of main stem, number of shells per square meter showed highly direct effects at.. all locations.