• 한국경영과학회:학술대회논문집
• /
• 대한산업공학회/한국경영과학회 2000년도 춘계공동학술대회 논문집
• /
• pp.74-77
• /
• 2000

Since the opening of the mobile telecommunications market to new entrants in 1996, the mobile telecommunications industry in Korea has transformed into a severely competitive market. Although there are numerous methods to evaluate the effects of the competition policy, the most relevant would be to measure the decreased degree of mobile service tariff. Also, after the Introduction of competition in the market, most carriers launched a variety of new tariff plans, which would satisfy the users′ traffic volume and pattern. Therefore, it is necessary to develop a "mobile tariff index" that would collectively consider all the various tariff plans. This paper aims to develop a mobile tariff Index that would accommodate all the various tariff plans provided by mobile carriers. To develop this mobile tariff index, mobile user′s will first be classified by their traffic volume, and then calculate the average tariffs per minute of each group of users, and lastly weight-average those tariffs per minute. And finally, this paper shows the mobile tariff index by considering those averaged tariffs and the carriers′ market shares to reflect the contribution of individual carriers and the users′ traffic volume.

• 한국기계가공학회지
• /
• 제18권2호
• /
• pp.102-107
• /
• 2019

The vehicle market has developed environment-friendly vehicles to comply with fuel economy regulations and exhaust regulations that have become stricter and stricter over time. Many studies have been conducted to improve the travel performance and fuel economy of environment-friendly vehicles, and vehicle manufacturers have been studying how to manufacture light-weight vehicles in order to improve the fuel economy of both existing vehicles and the newer environment-friendly vehicles. Exemplary light-weight vehicle technologies optimizes the design of the vehicle body structure, which is a vehicle weight-reducing method that modifies component shapes or layouts to optimize the structure of the vehicle. In addition, the new process technology uses new light-weight and very strong materials, and not typical materials, to manufacture light-weight vehicles. This study aims at the optimal design of vehicle body structures using multi-materials for the Fender-Apron, which is an important frame member for the external front side of a vehicle body, by conducting FEA (Finite Element Analysis) and multi-material bonding.

• 벤처창업연구
• /
• 제11권6호
• /
• pp.163-174
• /
• 2016

본 연구는 국가적 차원에서 경제위기를 극복하고 향후 지속적인 경제발전을 위한 신 성장 동력을 확보하기 위해서는 글로벌 시장을 리드할 수 있는 보다 많은 히든챔피언 육성이 필요하다는 관점에서 한독 히든챔피언 간의 SWOT요인 중요도를 비교하고, 경영학적 함의를 도출하고자 하였다. 이에 한국과 독일의 히든챔피언을 대상으로 실증조사를 통해 AHP기법을 적용하여 중요도를 산출하였다. 연구결과 첫째, 1단계요인(강점, 약점, 기회, 위협)의 중요도에는 국가 간에 약간의 차이는 있었으나 순위에는 변동이 없는 것으로 평가되어 SWOT에 대한 국가별 CEO의 인식은 비슷하다는 것을 알 수 있었다. 둘째, 2단계요인의 중요도 분석에서는 상대적으로 우선 시 되는 요인과 덜 우선 시 되는 요인에서 인식의 차이가 있는 것으로 나타났다. 즉, 한국의 경우, 우선 시 되는 요인 중에서 시장의 불확실성, 기술역량이 독일과 약간의 인식의 차이를 보이고 있다. 상대적으로 덜 우선 시 되는 요인 중에서는 최고경영자 집단의 과거 경험, 브랜드 인지도 부족, 경로의존성이 독일과 다소 인식의 차이를 보이고 있는 것으로 나타났다. 셋째, 두 국가 간의 중요도에 대한 인식이 좀 더 구체적으로 2단계 요인에 대해서 통계적으로 유의한지를 알아보기 위해 추가적인 분석을 실시하였다. 그 결과, 강점의 2단계 요인 중에서 기술적 역량, 약점의 세부요인에서는 해외시장지식 결여, 위협에 대한 2단계 요인 중에서는 시장 불확실성이 통계적으로 유의한 차이가 있는 것으로 나타났다. 기회에 대한 모든 세부요인에 대해서는 통계적으로 유의하지 않은 것으로 나타나 중요도에 대한 인식에 차이가 없는 것으로 분석되었다.

• 한국의상디자인학회지
• /
• 제24권1호
• /
• pp.35-43
• /
• 2022

This study aims to analyze the physical properties of non-woven fabric sheets, which continue to grow in the cosmetic market. Non-woven fabric sheets were used as specimens, and a total of 17 samples were analyzed. To evaluate the physical properties of the non-woven fabric sheet, the weight, tensile strength, surface properties, free swell absorption, and wet stiffness were tested. Through the results itw was determined that non-woven fabric sheets for mask packs should be manufactured considering fiber arrangement so that the weight is 40 g/m², and the tensile strength should be maintained near 12 kgf. In addition, it was confirmed that the material selection and process conditions should be adjusted so that the free swell absorption is at least 8 g/g, and the wet stiffness is 200 mg. Therefore, since the non-woven fabrics for the mask sheets can be used in various products depending on fabric composition, this study will be expected to be basic data for the continuous growth of the sheet-type mask packs coming to market.

• 산경연구논집
• /
• 제5권2호
• /
• pp.29-35
• /
• 2014

Purpose - The study aimed to evaluate the market opportunities and constraints confronting resource-poor pig farmers in South Africa. Research design, data, and methodology - Information was collected from 292 households in three municipalities through interviews with key informants. The data collected included socio-economic characteristics, major market channels, prices for different pig classes, average weight of the pigs on sale, number of pigs sold annually, and preferred meat quality attributes. Results - In Ngqushwa, 96% of respondents sold pigs as compared to Elundini (81%) and Ntabankulu (65%). Less resource-poor households and those with market-oriented production had large herdsizes (P < 0.05) when compared to more resource-poor farmers. The probability of selling pigs was high for the backyard production system and educated farmers. For all farmers, opportunities included high pork demand, good prices, employment creation, and a niche market for organically produced indigenous pork. Constraints include disease, feed shortages for large herds, distances to formal markets, lack of training, and drugs. Conclusions - Constraints outnumbered opportunities for the resource-poor pig farmers.

• 산업경영시스템학회지
• /
• 제43권1호
• /
• pp.7-15
• /
• 2020

It is a general phenomenon for manufacturers to provide vertically differentiated product line for more profit through improved market coverage. For such manufacturers, the compatibility between vertically differentiated products is an important decision issue. Some manufacturers provide full compatibility between high and low version products, whereas some provide only downward compatibility for the purpose of recommending high version product. In this study, the two representative compatibility strategies, full or downward, between vertically differentiated products produced by a single manufacturer are analyzed, especially under network externality and in the viewpoint of profit maximization. To do this we used a market model which captures the basic essence of vertical differentiation and network externality. Based on the proposed market model, the profit maximizing solutions are derived and numerically analyzed. The results can be summarized as follows : (1) Regardless of compatibility strategy, under network externality, vertical differentiation is always advantageous in terms of profit. (2) The full compatibility strategy is shown to be the most advantageous in terms of profit. In addition, it is necessary to make quality difference between differentiated products as wide as possible to maximize profit. (3) To gradually drive low version product out of the market and shift the weight pendulum of market to high version product, it is shown that the downward compatibility strategy is essential. Unlike intuition, however, it is also shown that in order to drive low version product out of market, it is necessary to raise the quality of the low version product rather than to lower it.

• Journal of Information Technology Applications and Management
• /
• 제14권4호
• /
• pp.159-174
• /
• 2007

The purpose of this research is to investigate the relationships among the perceived satisfaction, the perceived the trust, the commitment, the key features for mobile phone, the brand image, the switching cost and the repurchasing intention. We also examine the differences between Korean and Indonesian markets concerning the relationships of these key successfactors. The structural model is tested with the data form each of the sub-samples (i. e. Korean and Indonesian users taken separately). Properties of the casual paths, including standardized path coefficients, the significance of difference, and variance explained for trust, satisfaction, commitment and repurchasing in the hypothesized model, are presented. This study indicated that hardware (sound quality, LCD display, design) user interface (GUI, Menu, Key pad) and extra functions (camera phone, wireless internet, MP3 player) are the three important factors effecting the trust and the satisfaction. The proposed model has been newly tested from the technological prospective in order to get the more practical result. Following the model test, we conduct a test of the differences in path coefficients between Korean and Indonesian users. MSEM show that, compared to Korean market, Indonesian had more emphasized on extra-function for the mobile phone as well as giving more influence to the satisfaction from the brand image. It means Korean market consider the extra-function as basic or no-premium points. And the satisfaction has been effected by switching-cost in Korea but the trust in Indonesia. Other interesting result from the structural weight invariance indicate that, compared to Korean market, the brand-image has effected the satisfaction in addition to placing more the trust on determining the commitment in Indonesia.

• 한국IT서비스학회지
• /
• 제8권1호
• /
• pp.113-124
• /
• 2009

Value-based requirements engineering process, called The ViRE(Value-Innovative Requirement Engineering) was suggested to create an uncontested market using ERRC(Eliminate, Reduce, Raise, Create) requirements analysis. But ViRE did not provides a quantitative data analysis method for ERRC decision so as to make objective decisions for customers. In this paper, to solve this problem, we suggest a quantitative ERRC analysis method by estimating requirements cost. Our method defines user requirements and decides their weight. Then, it makes quality level table for all the identified requirements and function modules and estimate implementation cost based on their quality levels. Finally, assess each requirement's impact and then evaluate ERRC value. We could get the more objective ERRC values by evaluate the requirement weight. functional module weight, and implementation cost. And we proved the efficiency of our model by a case study, smart student ID system.

• 한국잠사곤충학회지
• /
• 제13권1호
• /
• pp.73-78
• /
• 1971

본시험은 공정거래를 기할 수 있도록 진섬유량으로부터 생사의 거래중량을 산정할 수 있는 정량거래방법 을 구명하기 위한한 연구로서 다음과 같은 결과를 얻었다. 1. 거래중량인 정량은 원량에서 연감후무수량을 감한 연감수분량의 원량에 대한 백분률인 연감수분률로 부터 산정하면 생사의 진섬유량을 잘 나타낼 수 있고 재현성이 있어 현행검사보다 합리적이다. 2. 연감수분률로부터 정량을 산정함에 있어서 연감후무수량에 대한 공정가산률은 44%로 함이 적당하다고 판단된다. 3. 섬도검사 잔사인 섬도사의 연감률과 하구의 연감률을 대표할 수 있을 것으로 생각되는 시료사(24타래) 의 연감률 사이에 통계적인 유의차가 없었으므로 섬도사의 연감률은 하구의 연감률을 대표할 수 있다. 4. 우리나라는 연감수분율검사에 의한 정량검사를 실시하면 약 2억원의 이득을 얻을 수 있다.

• 보건행정학회지
• /
• 제14권1호
• /
• pp.148-168
• /
• 2004

To investigate the effect of parents' social class on birthweight in Korea during the period of transition to a market economy, 1995-2001. Methods: All births resulting from pregnacies reported in 1995-22001(n=4,298,374) were studied with respect to social variation in birthweight. The results were adjusted for maternal age, parity, parents' education, gestational age, total births, the dead births among total births, the number of births in one delivery. Results: Between 1995 and 2001, mean birth weight was 3271g and low birth rate was 3.41%. Maternal education, faternal education, parents' occupation, the number of birth in one delivery, total births, gestational age, and the number of deaths among. total births were all independently related to the birthweight. Parents with lower education showed higher low-birthweight rates compared with parents with university level of education(OR: 2.16 for mother and 1.68 for father). Especially, mother's education showed stronger relationship with birthweight than fathers' education. The differences in birth weight by parents' social class, especially parents' educational level became stronger between 1995 and 2001. Discussion: This study suggests that the social differences of birth weight were increasing in order 1995 to 2001. Especially, this increasing tendency in variation in birth weight by social class was shown after economic crisis, 1998.