• KSBB Journal
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• v.10 no.1
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• pp.97-104
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• 1995

A computer simulation of biochemical process was carried out using Macintosh-based BioDesignerTM developed at Bioprocess and Engineering Center(BPEC) of MIT. Based on the assumptions and flask culture experiments, a porcine growth hormone (PGH, Porcine Somatotropin) production process was simulated by a two-stage continuous culture. The economical and sensitivity analyses were evaluated for the scale-up production of PGH. A high return on investment (ROI, 104%/year) suggested that the process be profitable. However, sensitivity analysis indicated that ROI was dependent on the yield of PGH, selling price, dose and the achievement of projected market penetration.

• Korean Architects
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• no.12 s.332
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• pp.34-42
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• 1996

우리 협회는 지난 11월 26일 오후 2시 협회 대강당에서 '건축설계의 국제경쟁력 확보 및 전문화 방안'을 주제로 토론회를 개최하였다. WTO출범과 건축설계시장개방 등 급격한 대내ㆍ외적 환경변화에 처해 있는 우리 건축계의 국제경쟁력 확보 방안을 마련하기 위해 열린 이날 토론회에서는 경쟁력 확보를 위해 건축설계사무소마다 다양한 전문분야를 확보하고, 건축설계 생산성 향상을 위해 설계업계와 구조, 설비 등 관련 전문분야가 협력체제를 구축해야 하며, 건축의 상품성과 문화예술성이 함께 고려된 건설관련 법안이 마련돼야 한다는 주장이 제기됐다. 이날 서울시립대 최찬환교수는 '건축설계의 경쟁력 확보 방안'이란 주제발표를 통해 해외건설업계의 국내진출에 대응하기 위해서는 설계사무소가 전문성과 효율성을 확보해야 한다고 강조하면서 전문영역을 크게 주거, 상업시설, 공공시설, 교육문화시설, 사회복지시설, 교통 및 운수시설 등으로 구분하였다. 최교수는 또 외국업체에 의한 국내시장 잠식을 막고 우리가 해외에 진출하기 위해서는 해외건설업체와 협력해 정보와 기술, 경험 등을 지원받아야 하고 R&D에 대한 투자를 적극적으로 해야한다고 강조했다. 이어 '건축설계의 전문화'에 대해 주제발표를 한 강원대 박경립 교수는 국내 건설관련문제점 개선과 대외경쟁력 강화를 위해 현재 입법추진되고 있는 건설산업기본법이 건축설계의 독자성과 전문성을 고려하지 않고 있다고 지적하면서 이에 대한 보완필요성을 제기하였다. 박교수는 또한 건축설계분야가 갖고 있는 전문성과 함께 '건축문화'라는 사회문화적 측면의 중요성이 인식돼야 한다며 건축의 상품성과 문화예술성이 함께 고려된 건설관련 법안이 마련돼야 한다고 지적했다. 박교수는 이밖에도 사회발전에 따른 새로운 전문영역의 개발로 실내 설계와 도시설계를 예로 들었으며 정보화에 맞게 고도의 전문성을 바탕으로 Network체계를 구축하고 그 핵심은 건축사협회에 정보Network를 구축하여 활용하는 것이라고 제안했다. 한편 주제발표 후에는 약 3시간여에 걸쳐 이문보(동국대 교수), 손세관(중앙대 교수), 이병담(현대산업개발 부사장), 김인호(국방부 건설기술과장), 유경철(삼육건축사사무소 대표), 이관영(본 협회 이사)씨 등 건설ㆍ건축관계자들이 참가한 종합토론이 이어졌다. 이 자리에서는 사회의 인식에 앞서 건축계 내부적으로 전문성과 효율성의 확보에 나서야 한다는 의견과 함께 무한경쟁속에서 우리 건축설계의 경쟁력을 높일 수 있다는 다양한 의견들이 제기되었다. 본지에서는 이번 토론회의 주제발표 내용을 요약 정리하여 게재한다.

• Review of Culture and Economy
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• v.21 no.2
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• pp.29-51
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• 2018

The Korea-USA FTA was activated in 2012 and evaluated highly on market-opening among FTA agreements which the Korea government has signed. This paper empirically examines the impact of the Korea-USA FTA on the Korea content industry trade performance with USA. Using ANOVA analysis, the study tested primarily whether there are difference in content exports and imports in a korea-US trade between before and after of Korea-USA FTA in 2012, the year of the entry into force of Korea-USA FTA. Using content industry exports and import data over the period 2007-2015, we find that Korea content export to US after 2012 is significantly different from one before 2012, and there is no difference in import. Based on a regression analysis, we also tested the impact size of Korea content export performance in Korea-USA FTA. The result is that coefficient of FTA dummy variable is not significant, meaning that even though there are some difference in korea content export to US between before and after of Korea-USA FTA, the Korea-USA FTA agreement itself is not a key factor which increase the Korea content export volume to USA market.

• Asia Marketing Journal
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• v.13 no.4
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• pp.227-251
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• 2012

This study analyzed Woori Investment and Securities' industry-leading marketing from both a brand management and a marketing decision-making perspective. By executing a different marketing strategy from its competitors, Woori Investment and Securities recognized recent changes in the asset management and investment markets as an open opportunity, and quickly responded to the market changes. First, the company launched the octo brand as a multi-account product, two years before its competitors offered their own products. In particular, it created a differentiated brand image, using the blue octopus character, which became familiar to the general financial community, and was consistently employed as part of an integrated marketing communications strategy. Second, it executed a brand expansion strategy by sub-branding octo in a variety of new financial products, responding to rapid changes in the domestic financial and asset management markets. Through this strategic evolution, the octo brand became a successful wealth management brand and representative of Woori Investment & Securities. Third, it has converged market research, demand and trend analysis, and customer needs acquired through various customer contact channels into a marketing perspective. Thus, marketing has participated in the product development stage, a rarity in the finance industry. Woori Investment and Securities has a leading marketing system. The heart of the successful product creation lies in a collaboration of their customer bases among the finance companies in the Woori Financial Group. The present study suggested a corresponding strategy for octo brand, which is expected to enter into the maturity stage of its product life cycle. In addition, this study found a need to modify the current positioning strategy in order to position and preserve sustainability in the increasingly competitive asset management market. It also suggested the need for an offensive strategy to counter the number one M/S company, and address the issue of cannibalism in the Woori Financial Group.

• Land and Housing Review
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• v.14 no.4
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• pp.17-37
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• 2023

The rental housing market in South Korea, specifically monthly rent with deposit, has been expanding over the last three decades (8.2% in 1990 to 21.0% in 2020), partly replacing the traditional Jeonse market. The distribution of rent has changed due to public rental subsidies and the emergence of luxury rental housing, while the distribution of rental household income has been polarized because of the emergence of rich renters. This study attempts to measure the structural changes in the rental market by developing a new indicator of income-rent mismatch. Using the seven series of the Korea Housing Survey, this study analyzed the changes in rent (reflecting the conversion rate) and income levels of rental households in 2006 (base year) and 10-15 years later (the analysis year) at the national level and at the spatial unit of 16 metropolitan cities and provinces (excluding Sejong), respectively, by dividing them into quartile data. The result reveals that rental housing was undersupplied in middle- and high-income rental housing due to the decline in the highest quartile (25%→18%) and the third quartile groups (25%→20%), while the supply of public rental housing expanded for the second quartile (25%→28%) and the lowest quartile (25%→35) groups. On the demand side, the highest income quartile shrank (25%→21%), while the lowest income quartile grew (25%→31%). Comparing the 16 metropolitan cities and provinces, there were significant regional differences in the direction and intensity of changes in rent and renter household income. In particular, the rental market in Seoul was characterized by supply polarization, which led to an imbalance in the income distribution of rental households. The structural changes in the apartment rental market were different from those in the non-apartment rental market. The findings of this study can be used as a basis for future regional rental housing markets. The findings can support securing affordable rental housing stock for each income quartile group on monthly rent and developing housing stability measures for a balance between income and rent distribution in each region.

• KDI Journal of Economic Policy
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• v.36 no.4
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• pp.1-32
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• 2014

Auction is widely used in allocation and procurement of resources due to its desirable properties: efficiency and revenue maximization. It is well-known, however, that auction may fail to achieve efficiency when allocative externalities exist. Such a result may happen in the auction of the resources that are very scarce, for example, radio spectrum. This is because allocation of the resources has effects on competition of the firms in the aftermarket, and thus a firm that utilizes the resources less efficiently may make a higher bid to lessen competition. This paper shows first that efficient allocation may not be achieved by auction even when the number of bidders is 2, while it is shown in the literature that auction may result in inefficient allocation when the number of bidders is greater than or equal to 3. There exist 2 firms, who make a bid to win the scarce resources that increase the value or decrease the production cost of their own product. After the auction ends, the firms engage in Bertrand competition on the Hotelling line. Inefficient allocation may happen even under the second-price auction rule, and it happens only when the firms are different in the initial value or the initial cost of their products as well as in the value of the auctioned resources. The firm who has been the leader loses a large portion of the market if it fails to win the auction, and thus makes a high bid even when the other firm can use the resources more efficiently. Allocative efficiency Pareto improves when the smaller firm's bid counts more than the leader's bid. This paper suggests a modified rule that the smaller firm wins the auction when its bid multiplied by some constant is greater than the leader's bid. The multiplier can be calculated from the market shares. It is equal to 1 when the two firms are the same, and is increasing in the leader's market share. Allocation is efficient in a strictly larger set of parameters under the modified rule than under the standard second-price auction rule.

• Korean Business Review
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• v.15
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• pp.153-179
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• 2002

The purpose of this study is to explore the context dependencies of perceived product typicality and favorableness led by typicality. Major findings and their marketing implications are as follow. First of all, while the typicality effect were evident in simle choice sets which consist of typical product and atypical one, entrance of extreme atypical product eroded the favorableness toward typical product. This implies that competitive advantage of pioneering typical brand can not be sustained when choice set is enlarged with entrance of distinctive atypical brands. Secondly, adding attractive and unattractive common attributes to all the products in choice set reduced the difference among perceived typicality of alternative brands. But added attractive common feature was analyzed to enhance favorableness of both typical brand and extreme atypical product. This finding implies that brands should have distinctive identity to be benefited from competitive adding features among brands with the evolution of market. Finally, when consumers expect to provide the explanation and justification for their evaluations and choices to others, they are shown to prefer and choose typical product which is effective to explain their reasons and to persuade others for their choice. This can be interpreted as consumers favor and choose conventional typical alternatives when they should justify their decision to others as with symbolic and expressive products and public and organizational buying.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.3 no.4
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• pp.325-332
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• 2002

In the process of designing pareto optimal insurance contract, it is necessary to assume that insurance contract conditions are endogenous to build a model. The expected utility, the non-expected utility and the state-dependent utility function can be applied as a insurance decision making principle. The insurance costs may have the linear, convex, and concave ralationship with the indemnity schedule. However, the sunk cost and fixed cost must be recognized. The deductible which decides whether an insurance contract to be a full or partial insurance contract can exist in the forms of straight deductible or diminishing deductible. Indeciding the level of deductible, the types of the insurance and the risks to be insured should be the deciding factors. Especially for recall insurance, there is relatively high chance that the recalling company being bankrupt. Therefore, the possibility of bankrupcy should be the considering factor in deciding the policy limit. The existence of the incomplete market and uninsurable background risk should be understood as restricting conditions of the pareto-optimal insurance contract.

• Proceedings of the Korean Vacuum Society Conference
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• 2014.02a
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• pp.323-323
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• 2014

기존의 태양전지 기술은 기술 장벽이 매우 낮고 대량 생산을 통한 단가 절감하는 구조를 가지고 있어 대규모 자본을 가진 후발 기업에게 잠식되기 쉽다. 그러나, III-V족 화합물 반도체를 이용한 집광형 고효율 태양전지는 기술 장벽이 매우 높은 기술 집약 산업이므로 독자적인 기술을 확보하게 되면 독점적인 시장을 확보 할 수 있어 미래 고부가 가치 산업으로 적합하다. 특히 III-V족 화합물 반도체 태양전지는 III족 원소(In, Ga, Al)와 V족 원소(As, P)의 조합으로 0.3 eV~2.5 eV까지 밴드갭을 가지는 다양한 박막 제조가 가능하여 다양한 흡수 대역을 가지는 태양전지 제조가 가능하기 때문에 다중 접합 태양전지 제작이 가능하다. 또한 III-V 화합물 반도체는 고온 특성이 우수하여 온도 안정성 및 신뢰성이 우수하고, 또한 집광 시 효율이 상승하는 특성이 있어 고배율 집광형 태양광 발전 시스템에 가장 적합하다. Si 태양전지의 경우 100배 이하의 집광에서 사용하나, III-V 화합물 반도체 태양전지의 경우 500~1000배 정도의 고집광이 가능하다. 이러한 특성으로 III-V 화합물 반도체 태양전지 모듈 가격을 낮출 수 있고, 따라서 Si 태양전지 시스템과 비교하여 발전 단가 면에서 경쟁력을 확보할 수 있다. III-V 화합물 반도체는 다양한 밴드갭 에너지를 가지는 박막 제조가 용이하고, 직접천이(direct bandgap) 구조를 가지고 있어 실리콘에 비해 광 흡수율이 높다. 또한 터널정션(tunnel junction)을 이용하면 광학적 손실과 전기적 소실을 최소화 하면서 다양한 밴드갭을 가지는 태양전지를 직렬 연결이 가능하여 한 번의 박막 증착 공정으로 넓은 흡수대역을 가지며 효율이 높은 다중접합 태양전지 제작이 가능하다. 이에 걸맞게 본연구에서는 화학기상증착장치(MOCVD)를 이용하여 InAsP 나노선을 코어 쉘 구조로 성장하여 태양전지를 제작하였다. P-type Dopant로는 Disilane (Si2H6)을 전구체로 사용하였다. 또한 Benzocyclobutene (BCB) 폴리머를 이용하여 Dielectric을 형성하였고 Sputtering 방법으로 증착한 ZnO을 투명 전극으로 사용하여 나노선 끝부분과 실리콘 기판에 메탈 전극을 형성하였다. 이를 통해 제작한 태양전지는 솔라시뮬레이터로 측정했을때 최고 7%에 달하는 변환효율을 나타내었다.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.22 no.9
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• pp.1179-1184
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• 2018

Korean travel agencies that have been utilizing the Internet passively feel threatened as global online travel agencies are quickly permeating the Korean travel market. Under these circumstances, this study conducted a focused analysis on how ICT affects the business environment of travel agencies. Based on the analyzed data, it also presents coping strategies for the Korean travel agencies. First, it is imperative to accelerate platform development to counteract the distribution structure of global tourism products. Second, it is essential that travel agencies actively utilize big data, the new paradigm of technology where data are generated at high speed, high volume, and for numerous purposes. Third, it is necessary to actively utilize a travel blog marketing strategy. As a communication tool for travel agencies, the continuing development of the Internet highlights the usefulness of marketing activities using blogs. Finally, it is essential to provide each customer more specialized travel consultancy.