• 한국환경복원기술학회지
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• 제12권6호
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• pp.112-122
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• 2009

Payment of Forest Landscape Service (PFLS) is based on the value of landscape conservation and is a positive forest policy inducing the owners of mountains to improve environmental service quality with economic incentives. The purpose of this study is to test the feasibility of PFLS and find out the elements related to PFLS such as associated statutes, target applications, eligible owner's requirements, and applicable environmental services. Research sites were selected in designated reserved forests by law and surveys were carried out with 28 professional forestry engineers and 10 owners of reserved forests located in Chungnam Province in November, 2008. As a result, the owners are willing to participate pilot-project of PFLS if they could have tax incentives. Preferred activities in their forestry are eco-tourism and carbon emission trading as PFLS business model. Although they expect low economic benefit from the PFLS, respondents answered introducing PFLS will give good opportunities for owners of a reserved forest to enhance willingness to manage their forestry properly for the landscape conservation. In this study, PFLS evaluation indicators and policy directions are established and recommends the strategies to cope with changing needs of forestry conservation by inducing the owners' active participation in the sustainable forest landscape management.

• 디지털융복합연구
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• 제12권11호
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• pp.141-157
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• 2014

이 연구에서는 대학생들 대상으로 하는 경험적 연구를 통해 그들의 창업의지를 살펴보고, 창업의지에 영향을 미치는 다양한 변수들을 살펴보았다. 창업의지에 대한 각 독립변수들의 영향요인을 검증한 결과, 개인적 특성에서는 개인역량이, 경력지향에서는 안전지향, 자율지향, 기술지향, 사업지향이 각각 유의미한 관계로 나타났다. 창업환경이 창업의지에 미치는 영향을 분석한 결과에서는 개인적 네트워크와 창업정책이 유의한 관계가 있는 것으로 확인되었고, 통제변수의 하나로 살펴본 창업교육 유무에서는 창업교육을 받았던 학생이 그렇지 않은 학생에 비해 창업의지가 높아지는 것을 확인할 수 있었다. 특히, 다수 변인의 유의성에도 불구하고 창업의지에 가장 유의미한 요인으로 나타난 것은 사업지향성이다. 따라서 대학생들 스스로 사업에 대한 아이디어를 구상하고 이와 관련된 설계 및 자기역량을 강화할 수 있는 다양한 창업 교육 프로그램을 개발, 보급해야 할 것이다.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2004년도 제22회 춘계학술대회논문집
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• pp.605-610
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• 2004

Solid propellants allow thrusters to be light-weight, com-pact and robust because they require neither tank nor valve, Moreover, the solid propellant will not leak, spill or slosh. Consequently, the solid propellant thruster is one of the potential candidates for the microthruster. On the other hand, the control of the solid propellant combustion is difficult, since the conventional solid propellant continues to bum until all the stored propellant is consumed. Although particular devices like thrust reverser were designed to control the combustion, these devices were rarely used in the practical rocket motors. These devices rise thruster weight as well as complicate the thruster operation. In this study, a solid propellant microthruster using laser sustained combustion was designed in order to develop a high-efficiency microthruster overcoming the previously-mentioned difficulty. This designed thruster has semiconductor lasers and non-self-combustible solid propellants in addition to the conventional solid propellant thruster. In this designed thruster, the semiconductor laser controls the combustion of the non-self-combustible solid propellant. In order to demonstrate that the solid propellant combustion is controllable with laser, some non-self-combustible solid propellants were irradiated with the laser at a back-pressure of about 1㎪. A 40-W class Neodymium Yttrium Aluminum Garnet (ND:YAG) laser was used as a tentative alternate to the semiconductor laser. This experiment has shown that the solid propellant combustion was controllable with 10- W class laser irradiation.

• 정보처리학회논문지D
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• 제8D권6호
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• pp.853-860
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• 2001

최근의 객체지향 소프트웨어개발에서는 설계 및 유지보수와 관련된 많은 문제점들을 해결하기 위하여 클래스를 재설계하거나 클래스계층구조를 재구성하는 등 객체지향 소프트웨어에 대한 일련의 재이용 및 재구성기법이 사용되고 있다. 본 논문에서는 클래스계층구조의 재구성에 관한 정형적인 이론을 제공함으로써 클래스계층구조의 재구성에 관하여 보다 수월하게 이해하고 적용할 수 있도록 하였다. 구체적으로 본 논문에서는 객체지향 소프트웨어의 개발에 있어서 주요 골격이 되는 클래스계층구조를 평탄화시킨 형태로 정의한 평탄화된 클래스계층구조를 소개하고, 임의의 클래스계층구조를 평탄화된 형태로 변형시키기 위한 알고리즘을 제안하였다. 클래스계층구조를 평탄화함으로써 클래스계층구조상의 계승 및 집약관계가 각 인스턴스들에게 어떻게 사상되는가를 수월하게 파악할 수 있으며, 주어진 클래스계층구조로부터 생성가능한 객체를 그대로 유지보존할 수 있는 평탄화된 형태의 새로운 클래스계층구조를 구축할 수 있다. 평탄화된 클래스계층구조는 클래스계층구조를 재구성하여 객체지향 소프트웨어를 점증적으로 변화 발전시키거나 재이용함에 있어서 기초를 제공하는 등 중요한 역할을 수행한다.

• 한국프랜차이즈경영연구
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• 제11권2호
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• pp.23-39
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• 2020

Purpose: Social Network Sites(SNS) have been grown up as a public communication channel consumer frequently participate in. Most of food service brands are utilizing social media for advertising recently. As a result of SNS marketing, food service brands anticipate positive outputs from SNS engagement and consumer brand engagement so that we need to verify structural relationship among SNS characteristics, SNS engagement and consumer brand engagement. Research design, data, and methodology: This study identifies that SNS characteristics have effects on SNS engagement and examines relationship between SNS engagement and behavioral engagement. We conceptualize SNS characteristics as information quality, hedonic level and interaction. Furthermore, SNS engagement is composed of SNS participation, positive word of mouth(WOM). In order to verify the purposes of this research, research model and hypotheses were developed. All constructs were measured with multiple items developed and tested in the previous studies. Sample data were collected from 433 online survey panels and analyzed by using SmartPLS 3.2.9. Result: The findings of this research are as follows. First, information quality is positively related with SNS participation. Hedonic level and interaction have impacts on SNS participation and positive WOM respectively. Second, SNS participation has positive effects on positive WOM. Third, both SNS participation and WOM influence behavioral engagement respectively. Conclusions: The implications demonstrate that SNS characteristics such as information quality and hedonic level and interaction exert effects for consumer to participate in SNS brand page. Meanwhile, hedonic level and interaction influence on positive WOM but information quality doesn't. SNS participation and positive WOM affect consumer to engage in specific brand behaviorally as well. Therefore, food service brand marketer is required to manage SNS information quality and hedonic level and interaction among members to encourage SNS participation and positive WOM. As SNS participation and positive WOM increases behavioral engagement of consumer, marketer needs to incentivize SNS participation and look after situation of positive WOM and respond swiftly.

• 한국프랜차이즈경영연구
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• 제11권4호
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• pp.31-44
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• 2020

Purpose: The purpose of this study is to examine the effects of CEO's self-determination on entrepreneurship, business performance (operational and financial performance). Also, this research provide some strategic insights for improving business performance. In the proposed model, self-determination consists of autonomy, competence, and relatedness, and entrepreneurship consists of innovation, initiative and risk sensitivity, and proactiveness. More specifically, this study proposes a framework that entrepreneurship and operational performance will play mediating roles between self-determination and financial performance. Research design, data, methodology: In this study, an online survey was conducted on SME CEOs for analysis, and a total of 122 samples were used. In the analysis process for hypothesis verification and evaluation, frequency analysis was first performed to identify the demographic characteristics of the respondents, and confirmatory factor analysis was conducted to assess the reliability and validity of the measurement model. In addition, a structural model analysis was conducted to examine the structural relationships between CEO's self-determination, entrepreneurship, and business performance (operational and financial performance) using SmartPLS 3.0. Results: The findings and summary are as follows. First, the autonomy of self-determination has a positive effect on entrepreneurship. Second, the competence of self-determination affects entrepreneurship and operational performance. Third, it affects the innovation, initiative and risk sensitivity of the CEO's entrepreneurship, and ultimately, its operational performance. The results show that the business performance of Start-up also increases when self-determination can be a factor in increasing entrepreneurship in three sub-dimensionalities. Conclusions: The conclusion of this study is that in order for SMEs to develop into a sustainable company by securing competitiveness after start-up, external motivation such as external help and support from the state (local government) is important, but competence and relationship, which are components of self-determination. The intrinsic motivation of the CEO may be more important. To this end, CEO's should prioritize learning for competency development, and the government should pay attention to providing various educational programs through establishment of education policies and education systems to enhance the competency of start-up CEO's.

• 산경연구논집
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• 제12권3호
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• pp.43-49
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• 2021

Purpose: This study attempted to examine the risk of stock price plunge according to the firm's management strategy. Prospector firms value innovation and have high uncertainties due to rapid growth. There is a possibility of lowering the quality of financial reporting in order to meet market expectations while withstanding the uncertainty of the results. In addition, managers of prospector firms enter into compensation contracts based on stock prices, thus creating an incentive to withhold negative information disclosure to the market. Prospector firms' information opacity and delays in disclosure of negative information are likely to cause a sharp decline in share prices in the future. Research design, data and methodology: This study performed logistic analysis of KOSPI listed firms from 2014 to 2017. The independent variable is the strategic index, and is calculated by considering the six characteristics (R&D investment, efficiency, growth potential, marketing, organizational stability, capital intensity) of the firm. The higher the total score, the more it is a firm that takes a prospector strategy, and the lower the total score, the more it is a firm that pursues a defender strategy. In the case of the dependent variable, a value of 1 was assigned when there was a week that experienced a sharp decline in stock prices, and 0 when it was not. Results: It was found that the more firms adopting the prospector strategy, the higher the risk of a sharp decline in the stock price. This is interpreted as the reason that firms pursuing a prospector strategy do not disclose negative information by being conscious of market investors while carrying out venture projects. In other words, compensation contracts based on uncertainty in the outcome of prospector firms and stock prices increase the opacity of information and are likely to cause a sharp decline in share prices. Conclusions: This study's analysis of the impact of management strategy on the stock price plunge suggests that investors need to consider the strategy that firms take in allocating resources. Firms need to be cautious in examining the impact of a particular strategy on the capital markets and implementing that strategy.

• Earthquakes and Structures
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• 제24권6호
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• pp.439-453
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• 2023

Older brick masonry structures generally suffer from low strength defects. Using a cement mortar layer (CML) or steel-meshed cement mortar layer (S-CML) to reinforce existing low-strength brick masonry structures (LBMs) is still an effective means of increasing seismic performance. However, performance indices such as lateral displacement ratios and skeleton curves for LBMs reinforced with CML or S-CML need to be clarified in performance-based seismic design and evaluation. Therefore, research into the failure mechanisms and seismic performance of LBMs reinforced with CML or S-CML is imperative. In this study, thirty low-strength brick walls (LBWs) with different cross-sectional areas, bonding mortar types, vertical loads, and CML/S-CML thicknesses were constructed. The failure modes, load-carrying capacities, energy dissipation capacity and lateral drift ratio limits in different limits states were acquired via quasi-static tests. The results show that 1) the primary failure modes of UBWs and RBWs are "diagonal shear failure" and "sliding failure through joints." 2) The acceptable drift ratios of Immediate Occupancy (IO), Life Safety (LS), and Collapse Prevention (CP) for UBWs can be 0.04%, 0.08%, and 0.3%, respectively. For 20-RBWs, the acceptable drift ratios of IO, LS, and CP for 20-RBWs can be 0.037%, 0.09%, and 0.41%, respectively. Moreover, the acceptable drift ratios of IO, LS, and CP for 40-RBWs can be 0.048%, 0.09%, and 0.53%, respectively. 3) Reinforcing low-strength brick walls with CML/S-CML can improve brick walls' bearing capacity, deformation, and energy dissipation capacity. Using CML/S-CML reinforcement to improve the seismic performance of old masonry houses is a feasible and practical choice.

• 한국건축시공학회지
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• 제23권5호
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• pp.571-581
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• 2023

최근 국내 건설산업은 건설업체의 경영난과 물량 감소로 인해 위축되고 있다. 국내 건설사들은 건설시장에서의 경쟁 우위 확보를 위해 모든 공종에 대해 원가절감 및 품질향상을 위한 노력을 기울이고 있다. 가치공학(VE) 기법은 건축공사에서 원가절감뿐만 아니라 공기 단축과 품질향상을 위한 도구로 활용되는데, 골조 공사 분야에 적용되는 성과가 상대적으로 미미한 실정이다. 공장 건설에서 골조 공사는 전체 공정에 큰 영향을 미치는 주요 공정이므로 골조 공사 계획단계에서 VE 기법을 도입해 설계도서와 현장 여건을 분석하여 품질과 안전을 확보하면서 공사 기간 단축, 원가절감, 작업성을 높일 수 있는 대안을 개발할 필요가 있다. 본 연구는 공기 단축, 원가절감, 시공 안전성 확보를 위한 기초연구가 될 것으로 기대된다.

• 벤처창업연구
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• 제15권6호
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• pp.67-79
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• 2020

본 연구는 미국 7개 대학의 창업교육 교과과정과 창업교육 프로그램에 대한 분석을 통해 미국 대학의 창업 교과과정의 특징과 프로그램의 현주소를 알아보고, 대학별 창업교육의 특징을 알아보고자 한다. 국내에 잘 소개되지 않은 미국 7개 대학의 기업가정신센터(Entrepreneurship Center)를 기반으로 학부단위 기업가정신 학위 과정 (Entrepreneurship Degree Course)을 개설하고 있는 대학 중 창업교육이 활성화 되어 있는 미국 드렉셀대학교, 서던캘리포니아대학교, 샌디에고주립대학교, 오클라호마주립대학교, 캘리포니아샌버나디노주립대학교, 캘리포니아어바인대학교, 플로리다주립대학교로 선정하여 진행하였다. 특히, 미국 7개 대학의 창업교육 과정과 창업지원제도가 학부과정, MBA과정, 석박사과정 그리고 비교과 차원에서 어떻게 진행되고 있는지 조사하였다. 본 연구를 통해 살펴본 미국 대학의 창업교육 시사점을 정리해보면 다음과 같다. 첫째, 대학이 주도적으로 창업교육을 하기 위해서는 대학의 특성에 맞는 창업교육 교과과정을 구성하고 지원프로그램을 도입해야 한다. 둘째, 대학 내 독립적인 센터를 설립하여 자체적으로 예산을 확보하고 이를 통해 자율적으로 운영이 될 필요가 있다. 셋째, 대학의 창업교육은 대학-산업의 파트너십 구축, 기업가정신 학위 과정의 운영 그리고 대학의 학과 간의 협업을 포함하여야 한다. 넷째, 독립적인 센터를 중심으로 동문, 지역 창업가들의 활발한 참여를 이끌고 이를 기반으로 창업 관련 프로그램이 운영이 되어야 한다. 따라서 각 대학의 특성에 맞는 차별화된 프로그램을 도입하여 국내 대학의 질적 성장 동력을 제고해야 할 것이다. 사례연구는 일반화할 수 없는 한계가 있지만, 유용한 프레임워크를 제공할 수 있다. 본 논문을 통해 국내 대학 창업교육의 현주소를 살펴보고, 선진화된 창업교육을 위한 방향성을 모색하고자 한다.