• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.4 no.2
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• pp.72-81
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• 1992

Experimental study on air ionization phenomena has been conducted to analyze the propagation behavior and dischargeability of polarity air ions under the super clean room environments with the operation of prototype of Air Ionization System. Varying humidity and air velocity, the distribution of air ion density and the discharge time are measured and analyzed.

• Journal of Distribution Science
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• v.12 no.3
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• pp.43-53
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• 2014

Purpose - This study suggested a practical model for super supermarkets (SSMs) and small- and medium-sized stores to grow together. Super centers expanded their business. However, after the retail distribution law was revised in 2009, mutual cooperation between large and small enterprises resulted in social issues and people raised the issue of profitability. Research design, data, and methodology - This study investigated cases of regulation over distribution in Japan, France, and other countries to reveal implications and recommendations. Results - This study demonstrated how SSM and middle and small supermarkets could grow together by franchising and using cooperative society law. Franchising was a mutual growth model whereby the franchiser provided franchisees with large enterprise systems and utilities while franchisees could provide the franchiser with local information. They could thus build trust in each other to facilitate a mutual growth model. Further, the voluntary franchise system's model facilitated the mutual growth model. Conclusions - This study demonstrates that the franchise system and cooperative society could constitute an ideal model whereby large enterprises and middle and small stores could rely upon each other and grow together.

• Journal of Distribution Science
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• v.19 no.1
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• pp.105-113
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• 2021

Purpose: The rural market in India provides tremendous scope for FMCG consumer healthcare companies to market their products because of a significant increase of rural purchasing power. Many empirical studies in this area highlight the challenges and opportunities for marketers in the FMCG space. Research articles are not in abundance to understand intermediaries' expectations in the supply chain specific to consumer healthcare products. The existing literature did not significantly address the challenges of channel partners in the rural market. The present study aims to determine the retailer expectations from manufacturers and channel members' mutual expectations in the FMCG distribution channel. Research design and Methodology: The present study adopted a qualitative research methodology. Fifty respondents from each level of distribution channel such as super-stockist, distributors and retailers in central India were identified and an interview method was adopted to collect the data. Results: Nineteen factors were identified to influence the intermediaries for involvement in the business with any FMCG brand. Factors like Profit margin, reverse logistics, credit terms, return on investment, timely payments were crucial for managing the expectations of all intermediaries. This study provides academic as well as practical implications in terms of enabling the industry to align its channel management strategies accordingly.

• Proceedings of the Korea Institute of Applied Superconductivity and Cryogenics Conference
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• 2000.02a
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• pp.29-32
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• 2000

Superconducting transmission cable is one of interesting part in power application using high temperature super-conducting wire as transformance. One important parameter in HTS cable design is transport current distribution because it is related with current transmission capacity and loss. In this paper, we present the calculation theory of current distribution for multi-layer cable using the electric circuit model and in example, calculation results of current distribution and AC loss in each layer of 4-layer HTS transmission cable.

• Elastomers and Composites
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• v.47 no.2
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• pp.141-147
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• 2012

Silicone resin has no water-absorbing function because it is a strong hydrophobic polymer. However, addition of super absorbent polymer gives much better absorbency than that of conventional silicone resin. In this study, we developed novel silicone materials with water-absorbing function by choosing three types of amorphous acrylic super absorbent polymers with different particle sizes, determining the mixing ratio of the three polymers and applying the mixtures into two-component type silicone material for medical purpose. The change in the mechanical properties such as tensile strength, tear strength, compressive strength and hardness was investigated by varying the particle size and content ratio of the added super absorbent polymers while preparing the silicone resins. The absorbency of the silicone resins was measured over time. Additionally, the particle shape of the super absorbent polymers as well as the distribution within the silicone resin was observed using an optical microscope.

• Journal of Distribution Research
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• v.16 no.1
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• pp.29-64
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• 2011

Given the current situation that there are a lot of rapid change in retail environment and have to offer more customized services to consumers, it is possible for Super Supermarket(SSM hereinafter) to get those. Thus it is explored whether perceived quality affected the customer satisfaction and in turn, the customer satisfaction affected the repurchase intention in SSMs. Especially we investigated the moderate effect of income, age, the number of family members on the relationship between customer satisfaction and repurchase intention. We used the method of structural equation modeling to test hypotheses. As a result, 5 out of 7 hypotheses are statistically significant and partially supported in moderate effects. The results of this study imply that mangers in SSMs have to improve those positive factors that were revealed significant. And given the fact that main customers in SSMs are those who live near and is a nuclear family, they should offer high quality goods and services relevant to them.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.14 no.5
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• pp.36-42
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• 2000

The increasing application of power electronic equipment 'especially (ASDs: adjustable speed drives)] on distribution systems has led to a growing concern for harmonic distortion and the resulting impacts on system equipment and operations. Therefore, harmonic studies have become an important aspect of power system analysis and design in recently years. Computer simulations which is related harmonic are used to quantify the distortion in voltage waveforms in a power system. Many digital computer programs are available for harmonic analysis. In frequency spectrum analysis, Simulation using SuperHarm program is superior to simulation using others. Therefore, Computer simulation using SuperHarm program is one of the effective ways to assess the harmonic effects of ASDs. The purpose of this study is to calculate the quantity of harmonic voltage by varying the ASD side load and to design the optimal harmonic filter for the elimination of harmonics.

• ETRI Journal
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• v.34 no.1
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• pp.134-137
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• 2012

Power metal-oxide semiconductor field-effect transistor (MOSFET) devices are widely used in power electronics applications, such as brushless direct current motors and power modules. For a conventional power MOSFET device such as trench double-diffused MOSFET (TDMOS), there is a tradeoff relationship between specific on-state resistance and breakdown voltage. To overcome the tradeoff relationship, a super-junction (SJ) trench MOSFET (TMOSFET) structure is studied and designed in this letter. The processing conditions are proposed, and studies on the unit cell are performed for optimal design. The structure modeling and the characteristic analyses for doping density, potential distribution, electric field, width, and depth of trench in an SJ TMOSFET are performed and simulated by using of the SILVACO TCAD 2D device simulator, Atlas. As a result, the specific on-state resistance of 1.2 $m{\Omega}-cm^2$ at the class of 100 V and 100 A is successfully optimized in the SJ TMOSFET, which has the better performance than TDMOS in design parameters.

• Korean Institute of Interior Design Journal
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• no.41
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• pp.112-120
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• 2003

The purpose of this study is to review the plan composition characteristics of the super high-rise apartment. 20 cases were selected in Seoul and Kyunggi area that were planned or constructed since 1999, and 10 unit plans were analyzed to review such design characteristics as block type & entry access type, plane figure, opening layout, area distribution and spice composition of unit plan. The result of the study shows that the super high-rise apartment has more variant block types and plane figures compare with the conventional high-rise apartment, and it also has several design characteristics in plane composition such as the increase of the number of the walls with openings, the weakening of the spatial centralization of a living room and the dispersion of rooms with the increase of connection by corridors.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.27 no.8
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• pp.497-500
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• 2014

In this paper, we analyze electrical characteristics of n/p-pillar layer according to trench angle which is the most important characteristics of SJ MOSFET and core process. Because research target is 600 V class SJ MOSFET, so conclusively trench angle deduced 89.5 degree to implement the breakdown voltage 750 V with 30% margin rate. we found that on resistance is $22mohm{\cdot}cm^2$ and threshold voltage is 3.5 V. Moreover, depletion layer of electric field distribution also uniformly distributes.