• 경제분석
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• 제25권3호
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• pp.70-99
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• 2019

본 연구는 주가지수, 원달러 환율, 국채수익률 및 신용스프레드로 구성된 Stochastic volatility-in-mean VAR 모형을 이용하여 금융시장 불확실성이 금융시장에 미치는 효과를 분석하였다. 첫째, 불확실성 증가충격의 효과는 경기후퇴적(recessionary)이며, 특히 주가 하락효과와 원달러 환율 상승효과가 강력한 것으로 나타났다. 둘째, 금융시장 스트레스에 따른 국면전환(regime shift) 효과에 대한 분석에서는 금융시장 위기 기간 중 불확실성의 효과가 평상시에 비해 더욱 강력해진다는 결과를 얻었다. 마지막으로 금융시장 불확실성 증가는 금융부문을 넘어 실물부문까지 영향을 미치는 실질효과 가능성에 대한 증거가 제시되었다.

• 한국미생물·생명공학회지
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• 제49권3호
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• pp.337-345
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• 2021

Lipase (triacylglycerol lipase, EC 3.1.1.3) is an enzyme capable of hydrolyzing triacylglycerol, to produce fatty acids and glycerol and reverse the reaction of triacylglycerol synthesis from fatty acids and glycerol through transesterification. Applications of lipase are quite widespread in the industrial sector, including in the detergent, paper, dairy, and food industries, as well as for biodiesel synthesis. Lipases by yeasts have attracted industrial attention because of their fast production times and high stability. In a previous study, a lipase-producing yeast isolate was identified as Zygosaccharomyces mellis SG1.2 and had a productivity of 24.56 U/mg of biomass. This productivity value has the potential to be a new source of lipase, besides Yarrowia lypolitica which has been known as a lipase producer with a productivity of 0.758 U/mg. Lipase production by Z. mellis SG1.2 needs to be increased by optimizing the production medium. The aims of this study were to determine the significant component of the medium for lipase production and methods to increase lipase production using the optimum medium. The two methods used for the statistical optimization of production medium were Taguchi and RSM (Response Surface Methodology). The data obtained were analyzed using Minitab 18 and SPSS 23 software. The most significant factors which affected lipase productivity were olive oil and peptones. The optimum medium composition consisted of 1.02% olive oil, 2.19% peptone, 0.05% MgSO₄·7H₂O, 0.05% KCl, and 0.2% K₂HPO₄. The optimum medium was able to increase the lipase productivity of Z. mellis SG1.2 to 1.8-fold times the productivity before optimization.

• 농촌계획
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• 제26권1호
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• pp.23-38
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• 2020

This study is aimed at the deduction of the important priority factors by setting the comprehensive rate in each of the economy, sociability and environmental areas for the sustainable development of fishing villages. As the research methods, review of domestic and overseas literature and Delphi questionnaire survey on experts, and hierarchical structure analysis were executed. Accordingly, this study is aimed at providing the basic data at the time of establishing plans by assessing the level of importance and priorities for each item through the deduction of the elements necessary for the fishing village plan. Key results of the study are as follows. First, as the results of review of domestic and overseas literature related to sustainability indices of fishing villages, a total of 50 items in the areas of economy, sociability and environment were deduced. Second, validity for each area was confirmed through Delphi questionnaire survey on experts. Third, as the results of factor analysis conducted on the basis of the hierarchical structure analysis for detailed items for each sector, 3 factors in the economic area, 2 factors in the social area and 3 factors in environment area were deduced. Fourth, as the results of the relative importance of the higher tiers, economic sector (0.528) displayed results that are more than 2 times higher than the social (0.261) and environmental (0.212) sectors. Establishment of foundation for independent competition (0.105), balanced development of small fishing village (0.086) and population engaged in economic activities in comparison to the fishing village population (0.077) were analyzed as the most important detailed items. Based on these results, experts pointed out that the economic sector is most important for the sustainable development of fishing village and, in detail, priority must be placed on the balanced development on the basis if the extent of independence of the fishing villages, and emphasized activation of residents engaged in economic activities in fishing villages in order to support them. That is, in order to increase the level of independence of the fishing villages, it was determined that there is a dire needs for expansion of diversified specialized businesses and infrastructural facilities through agreement by the residents capable of economic activities, and means of activating fishing villages through securing of budget at the local autonomous government level to provide support for the residents.

• 농촌계획
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• 제26권3호
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• pp.79-89
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• 2020

Since the Republic of Korea had been registered as the 24th member of OECD DAC in 2009, recent trend of Korea's ODA has showed drastic increase including agriculture and rural development sector. Particularly, various rural development projects have been implemented adopting development experience and methodology of Saemaul Undong (SMU, New Village Movement). This study implemented statistical analysis between villagers' participation and achievement of rural community development project, based on practical data out of 'Saemaul Undong Project in Myanmar', to suggest meaningful implication in terms of participatory rural development. It emphasized the importance and necessity of villagers' participation in rural development through regression analysis that proved positive correlation between villagers' participation and rural development project. It proves that income-generation part has significantly greater influence than capacity-building and living environment part in terms of rural community development project: Based on the analysis, comparing impact of each independent variable, income generation has 1.88 and 1.68 times greater impact than capacity-building and living environment respectively. The result, on the other side, rather raise the importance of careful consideration for project design and implementation to harmonize those three parts altogether especially rural development for developing countries: capacity-building and living environment parts suggests essential foundation to make income generation successful that enables to secure project achievement and sustainability.

• The Journal of Asian Finance, Economics and Business
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• 제9권3호
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• pp.171-180
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• 2022

Employee retention is becoming a crucial idea for businesses that aim to improve their performance, resulting in an increasing emphasis on the topic in today's society. Employee retention refers to an organization's ability to retain its employees. The retention of workers may be viewed as a technique used by companies to retain their personnel since it is linked to employer efforts to maintain their staff. Online surveys were initially done between April and July 2021. Furthermore, the study's primary focus was employees of small and medium enterprises. To collect data, the questionnaires were distributed through Google forms. The survey used a snowballing technique because the questionnaires were circulated among the participants. Based on the results, the research found that Perceived Organizational Support (POS) and Perceived Organizational Justice (POJ) mediate the relationship of Value Congruence (VC) and Job Characteristics (JS) and employee retention in the Lebanese Retail Sector. Employees appreciate POS because it satisfies their desires for acceptance, esteem, and connection and offers comfort during times of stress. Employers must give priority to equal effort to ensure equitable treatment for workers at work. By integrating justice and equality in all departments, the performance of workers may be enhanced.

• International Journal of Computer Science & Network Security
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• 제24권3호
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• pp.83-92
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• 2024

It is a common observation that whenever any patient arrives at the front desk of a hospital, outpatient clinic, or other health-associated centers, they have to first queue up in a line and wait to fill in their registration form to get admitted. The long waiting time without any status updates is the most common complaint, worrying health officials. In this paper, UrNext, a location-aware mobile-based solution using Bluetooth low-energy (BLE) technology, is presented to solve the problem. Recently, a technology-oriented method has been gaining popularity in solving the healthcare sector's problems, namely the Internet of Things (IoT). The implementation of this solution could be explained through a simple example that when a patient arrives at a clinic for her consultation. There, instead of having to wait in long lines, she will be greeted automatically, receive a push notification telling her that she has been admitted along with an estimated waiting time for her consultation session. This will not only provide the patients with a sense of freedom but would also reduce uncertainty levels that are generally observed, thus saving both time and money. This work aimed to improve clinics' quality of services and organize queues and minimize waiting times in clinics, leading to patient comfortability and reducing the burden on nurses and receptionists. The results demonstrated that the presented system was successful in its performance and helped achieve high usability.

• 한국융합학회논문지
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• 제8권5호
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• pp.275-285
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• 2017

건축대지는 건축디자인의 배경으로서 그 주변 환경과의 맥락 속에 존재하며, 건축은 대지와 주변 환경과의 연계성 속에서 인식되어 존재하므로 건축물의 계획은 대지분석으로부터 시작되며 그것의 귀결 또한 주변 환경과의 상호관계 속에서 그 장소성의 의미를 찾을 수 있다. 그렇지만 아이러니하게도 이러한 의미를 지닌 대지분석에 대하여 직접적으로 기술한 논문은 존재하지 않는다. 그러므로 본 논문은 생태계의 환경을 구성하는 지(地) 수(水) 화(火) 풍(風)의 4가지 환경을 중심으로 대지분석 항목을 분류하고, 나아가 대지내부와 주변 환경의 유기적인 상관관계를 종합한 융합적인 정보의 결과를 건축설계에 적용하기 위한 대지의 수평 3분할과 수직 3분할 그리고 그것의 조합인 '9sectors system'을 고안하여 보다 이성적이고 효율적인 건축계획에 도움을 주고자 하였다. 그리고 이러한 system을 적용한 프로젝트의 진행을 통하여 기존의 대지분석 방식보다 더욱 세밀한 대지분석 자료에 대한 적용방안임을 검토하였다.

• 한국기후변화학회지
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• 제8권3호
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• pp.231-237
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• 2017

In this study, the $N_2O$ emission factor of the facility was developed by measuring the kiln type pyrolysis melting facility. This used PAS (Photoacoustic Spectroscopy) method and measured the $N_2O$ emission concentration. From March 2016 to April 2016, it was measured over a total of two times and $N_2O$ concentrations were measured continuously for 24 hours using a 24 hour continuous measuring instrument (LSE-4405). The measured $N_2O$ emission concentration of the pyrolysis melting facility was 0.263 ppm on average and the emission concentration distribution in the range of 0.013~0.733 ppm was obtained. Therefore, the $N_2O$ emission factor of the kiln-type pyrolysis melting facility was estimated to be $0.829gN_2O/ton$-Waste. As a result of comparing the $N_2O$ emission factor of the thermal kiln type pyrolysis melting facility and the previous study, previous studies were about 18 times higher. It is estimated that this is due to the difference of furnace temperature, oxygen concentration and denitrification facilities. It is considered that the study of the emission factor of pyrolysis melting facility is an important factor in improving the credibility of greenhouse gas inventory in waste incineration sector.

• 한국해양바이오학회지
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• 제3권1호
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• pp.1-6
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• 2008

Angola has a coastline of about 1,650 km long. Two diverging current namely, the Angola current with its warm water from the north and the cold Benguella Current in the south create a strong up-welling with a high productive ecosystem for marine resources. The area from Lobito to the mouth of the Cunene River, also known as the Southern fishing zone is by far the most productive of Angola's fishing zones. In 1977, the total potential of its marine fisheries sector was estimated at more than 700,000 tonnes per annum. In 2003, the Total Allowable Catch (TAC) established for demersal species was 57,600 tonnes and 160,000 tonnes for pelagic species. The most important resources are various marine demersal and pelagic fish including pilchard and the Cape and Cunene horse Mackerel (Tranchurus capensis and T. trecae). Sardinellas (Sardinella aurita and S. maderensis) are fished in parallel with horse mackerel. The rest of the catches are mainly demersal spp. and some deep water crustaceans. The demersal sppecies consist of Hake (Merluccius polli and M. capensis) and the large eye dentex spp. Tunas are caught at certain times of the year whilst some marine shrimp are also harvested from the Angolan waters. Angola also has several high value freshwater fish species, exploited by about 255 fishers. Tilapia sp. is among the most important and abundant fresh water fish found in Angola. Other species include the catfish (Clarias gariepinus) and fresh water prawns (Macrobrachuin rosenbergii). Some aquaculture ponds have been established in the country side, but due to lack of investment, proper training and the impact of civil war have seriously limited developments in the sub sector.

• 한국방재안전학회논문집
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• 제11권1호
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• pp.7-14
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• 2018

전라남도 완도군 다도해해상국립공원 소재의 철새 중간 기착지 역할을 하는 배낭기미 습지는 다양한 종과 많은 수의 철새들이 관찰되는 장소이다. 철새의 서식환경의 효과적이고 과학적인 관리방안을 마련하기 위해 배낭기미습지의 수리 수문현장조사를 수행하였다. 기초자료 확보를 위하여 수리 수문현장조사와 철새 중간 기착지 서식지이용 실태조사를 병행하여 수행하였다. 배낭기미습지의 수리 수문조사는 2015~2016년(2개년)의 기간 중 연 1~2회 현장계측을 실시하였다. 지형 및 지질, 강우, 수리특성, 습지의 상태에 따라 크게 4개의 구역으로 분류하였고, 철새조사 지역과 동일한 3구역과 습지의 유출부 1구역을 조사 및 분석 대상으로 하였다. 또한, 봄철과 가을철 철새의 이동시기에 배낭기미습지로 도래하는 이동성 소형 조류들을 중점적으로 조사를 실시하였으며, 배낭기미습지 내 서식환경을 크게 3개의 지역으로 분류하였다. 각 지역에 따른 개체수와 종을 조사한 결과, 각 구역별 수심, 퇴적물 두께와 염도에 따라 서식환경이 달리 나타났으며, 철새가 선호하는 수리 수문특성을 확인하였다. 본 연구는 철새의 중간 기착지 역할을 하는 배낭기미습지의 과학적 관리방안을 위해 사용될 것이고, 서식환경과 기초 수리 수문자료의 연관성 검토를 통해 생태-수리학의 기초자료에 기여할 수 있을 것이라고 판단된다.