• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.420-424
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• 2022

The Arab Automotive Company was the first corporation in Saudi Arabia and was founded in 1928. Since then, the number of Saudi corporations had increased. In 1985, Tadawul (The Saudi Stock Exchange ) was instituted under the supervision of the Saudi Arabian Monetary Authority (SAMA) and the base value of the index was 1000. This decision came as a response to accelerated growth in the number of Saudi corporations which had increased during the 1970s as the Saudi's economy developed.

• 통상정보연구
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• 제6권3호
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• pp.269-296
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• 2004

International Procurement refers to the actions governments and public institutions worldwide buy goods and services. With the WTO agreement on government procurement, most procurements are realized by bidding, which accelerates the opening-up of International procurement. Today International procurement has drawn the world's attention. The scale of international procurement market has been developing fast, reaching about US$ 5.55 trillion this year, In our country, however, due to the difficulty in initial market access to local procurement, the participation in taking international procurement is quite inactive, especially when compared with our exporting scale. The UN procurement market has procurement rules that countries which make contributions to UN and developing countries are favorably treated, and non-discriminatory and public competition in bidding and the optimum purchase are kept, and so on. It has its own head office and many subsidiary agencies. Actually the international procurement market offers an international marketplace for suppliers of all tangible goods and services. Therefore, UN and international procurement markets are great significant foreign markets to our country. But our country lagges behind in international procurement as it has not reached to our monetary contribution to UN. Therefore, it's essential to stimulate our company's participations in the UN procurement market. To fulfil this purpose, first of all, this study analyzes the current status of UN procurement market and Korea's current participation status. Then it investigates the procurement information system of UN and Korea's international procurement market information system as well as assistance system. Based on the above, by studying on the actual spots of the interview investigations on the registered firms in UNPD, this thesis discloses the problems with the Korea's national information system and assistance system on UN procurement market. Finally, this study raises the efficient plan for the integrated international procurement information system & assistance system.

• 한국컴퓨터정보학회논문지
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• 제27권9호
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• pp.243-251
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• 2022

부동산 산업은 경제와 높은 상관관계를 갖는 기초산업이다. 과거 20년 동안 중국경제성장을 가속화하면서 부동산 산업도 큰 변화를 보이고 있다. 이에 본 연구는 기존 경제성장지표인 GDP, 소득, 부동산 가격 및 금리 등 거시경제요인이 주택시장 가격상승을 종합적으로 설명하지 못한 점을 감안하여 행동경제학에서 심리지수가 주택시장에 미치는 영향을 분석한다. 방법론적으로 주성분분석법(PCA)을 활용하여 중국심천지역을 중심으로 부동산시장 수요자 심리지수 및 공급자 심리지수를 각각 도출하고 벡터자기회귀(VAR)모형을 통해 심리지수가 주택수익률에 대한 영향을 실증분석으로 진행한다. 그 결과 공급자의 심리는 주택시장에 긍정적인 영향을 미친 반면, 수요자의 심리는 부정적인 영향을 미치고 있다. 또한 공급자의 심리가 높은 경우에는 수요자의 심리가 높은 경우와 다른 영향을 미치고 있은 것을 밝혔다.

• 국제지역연구
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• 제12권3호
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• pp.49-67
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• 2008

본 연구에서는 경제 내 갑작스런 구조적 변화가 있을 경우의 최적 통화정책 준칙을 살펴본다. 연구의 첫 단계에서는 Markov 상태전환모형을 이용하여 미국 주택가격 상승률의 추이에 두 개의 상이한 상태가 존재함을 보인다. 식별된 두 개의 상태 중 하나는 실질 이자율이 상승시 주택 가격 상승률이 하락한다는 면에서 '통상적'인 상태로 보인다. 반면, 다른 상태 하에서는 주택가격 상승률과 실질 이자율이 양의 상관관계를 갖는다는 면에서 '이례적'인 상태라 할 수 있다. 연구의 두 번째 단계에서는 주택시장에 이와 같은 두 개의 상태가 존재할 경우 중앙은행의 최적통화준칙을 살펴본다. '통상적' 상태 하에서는 인플레이션 압력에 반대로 대응해야 하는 반면, '이례적' 상태에서는 인플레이션 압력을 수용(accommodate)해야 한다는 면에서 중앙은행의 최적통화정책은 비대칭적이다. 또한, 미래 상태에 대한 불확실성이 있을 경우 더욱 보수적으로 통화정책을 운용해야 한다는 결과가 도출된다.

• KDI Journal of Economic Policy
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• 제31권2호
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• pp.15-45
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• 2009

본고에서는 3요인 무재정거래(3-factor no arbitrage) 조건하에서의 이자율 기간 구조를 추정하고 이를 이용하여 기간프리미엄의 추이 및 정책금리 변경의 유효성을 분석하였다. 기간프리미엄의 경우 3년물에서 높게 나타나고 있는데, 이는 장기적인 경제 상황보다 향후 3년 정도의 시계에서 경제의 불확실성이 높을 것이라는 투자자들의 인식을 반영한 것으로 해석된다. 한편, 최근 기준 지표금리의 변경에 따른 통화정책의 효과성을 살펴보기 위해 지표금리 변경시점을 전후로 하여 금융시장에서의 단기금리 변경이 채권시장의 수익률곡선의 형태에 미치는 효과를 분석해 보았다. 분석 결과, 금융시장에서의 대표적인 단기금리인 콜금리와 채권시장에서의 단기금리인 초단기이자율 간의 괴리가 지표금리 변경 이전과 비교하여 크게 확대된 점을 발견할 수 있었다. 이러한 괴리 확대가 새로운 기준금리에 대한 운용겸험 미숙에 연유한 것인지, 최근의 국제금융시장 불안에 따른 예외적인 경우인지는 현 단계에서는 명확히 결론짓기 어려우나 통화정책의 유효성을 제고하기 위해서는 이러한 괴리를 축소하는 통화정책 운용이 필요할 것이다.

• 유통과학연구
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• 제12권8호
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• pp.123-132
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• 2014

Purpose - Recently, Korean companies have been struggling to perform well in the larger smartphone market in China, which is regarded as a blue ocean area. First, it is very important to accurately understand the Chinese consumers, who have a different consumption culture and value system from the Korean culture and system. This would help to identify priorities for the Chinese market. Further, considering the smartphone industry, where technological change is rapid, Korean companies will need to take prompt measures about market trends in order to establish strong competitiveness. Consequently, this study focused on analyzing the relationship between the variables of consumption value, satisfaction, and loyalty in the Chinese smartphone market. The principal dimensions of consumption value, which smartphones have, was analyzed, and the influence on satisfaction was identified. Moreover, the relationship among the variables of satisfaction, attitudinal loyalty, and behavioral loyalty was empirically analyzed. Research design, data, and methodology - This study examined the relationships between various consumption values (functional value, emotional value, social value, epistemic value, and economic value), along with satisfaction and loyalty. The data were collected through a questionnaire survey that was circulated to 310 customers who were users of smartphones in Chingdao and Yeontae regions in China. The survey was conducted from June 23 to August 4, 2013. A total of 301 responses to the questionnaires were collected and used for the data analysis. Moreover, a path analysis based on Lisrel 8.54 was used for the hypothesis test. Results - The variables of functional value, emotional value, social value, and epistemic value were revealed to have positive effects on satisfaction related to smartphone usage. However, the variables of monetary cost and psychological cost were not found to have negative effects on satisfaction related to smartphone usage. Moreover, satisfaction positively influenced attitudinal loyalty related to smartphone usage, but did not have a significant influence on behavioral loyalty related to smartphone usage. Specifically, satisfaction is essential, but not a sufficient condition for building behavioral loyalty in relation to smartphone usage. In addition, attitudinal loyalty positively influenced behavioral loyalty in relation to smartphone usage. Conclusions - First, this study shows that functional value, emotional value, social value, and epistemic value in relation to smartphone usage are important for marketing in the Chinese smartphone market. Particularly, functional value and emotional value play pre-eminent roles as regards customer loyalty in the use of smartphones. Second, the results of this study reveal that the variables of monetary cost and psychological cost are not important to the Chinese consumers. Specifically, the smartphone price and cognitive effort are not perceived as value barriers. Third, satisfaction did not guarantee behavioral loyalty in relation to smartphone usage, and the strategic approach for improving the repurchase and referral action in relation to smartphones based on solid attitudinal loyalty would be desirable and should be the focus of the marketing activities of Korean smartphone companies.

• International journal of advanced smart convergence
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• 제10권1호
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• pp.1-11
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• 2021

Document page segmentation is an important step in building a quality optical character recognition module. The study examined already existing work on the topic of page segmentation and focused on the development of a segmentation model that has greater functional significance for application in an organization, as well as broad capabilities for managing the quality of the model. The main problems of document segmentation were highlighted, which include a complex background of intersecting objects. As classes for detection, not only classic text, table and figure were selected, but also additional types, such as signature, logo and table without borders (or with partially missing borders). This made it possible to pose a non-trivial task of detecting non-standard document elements. The authors compared existing neural network architectures for object detection based on published research data. The most suitable architecture was RetinaNet. To ensure the possibility of quality control of the model, a method based on neural network modeling using the RetinaNet architecture is proposed. During the study, several models were built, the quality of which was assessed on the test sample using the Mean average Precision metric. The best result among the constructed algorithms was shown by a model that includes four neural networks: the focus of the first neural network on detecting tables and tables without borders, the second - seals and signatures, the third - pictures and logos, and the fourth - text. As a result of the analysis, it was revealed that the approach based on four neural networks showed the best results in accordance with the objectives of the study on the test sample in the context of most classes of detection. The method proposed in the article can be used to recognize other objects. A promising direction in which the analysis can be continued is the segmentation of tables; the areas of the table that differ in function will act as classes: heading, cell with a name, cell with data, empty cell.

• 한국태양에너지학회:학술대회논문집
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• 한국태양에너지학회 2008년도 춘계학술발표대회 논문집
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• pp.318-323
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• 2008

First aim of this study is to investigate consumer's actual value for environment related performance of house by using three different method, Ranking, Analytical Hierarchy Process (AHP) and Conjoint Analysis method. Second aim is to estimate consumers' monetary value about environment related factor through Marginal Willing to Pay(MWTP), and third aim is to find out the difference of values between the groups classified according to respondents' characteristics. A questionnaire survey was carried out in Seoul in order to clarify the preference and monetary value of four selected attributes. They are environmental performance, residents' health, home automation and increase of floor area. As a result, people showed high values in the order of health, environmental consideration, increase of floor area and home automation. Moreover, it was found out that MWTP for environmental performance and health are higher than market price. In addition, the group of high age and group of female showed high values for the reduction of $CO_2$ emission

• KDI Journal of Economic Policy
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• 제40권1호
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• pp.67-83
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• 2018

We have hypothesized that nuclear risk is significantly inversely related to the distance from residences to nuclear power plants and that the level of life satisfaction of residents therefore increases with the distance. We empirically explore the relationship between Ulsan citizens' life satisfaction levels and the distance between their residences and the Kori and Wolsong nuclear power plants (NPP) based on the life satisfaction approach (LSA). The dataset we used covers only Ulsan citizens from the biennial Ulsan Statistics on Citizen's Living Condition and Consciousness of 2014 and 2016. Controlling for micro-variables such as education, work satisfaction, gender, marital status, and expenditures, we found a statistically significant relationship between life satisfaction and the distance between the residences and the nuclear power plants. Nuclear negative externalities including (i) health and environmental impact, (ii) radioactive waste disposal, and (iii) the effect of severe accidents can be quantified in terms of LS units and monetary units. We were able to calculate the monetary value of NPP externalities at $277 per kilometer of distance for Kori and $280 per kilometer of distance for Wolsong at constant 2015 prices. These estimates are quite different from the traditional estimates made with the contingent valuation method, whereas they are similar to the findings of LSA studies abroad. Hence, the need to adopt the LSA in South Korea and policy implications are demonstrated.

• International Journal of Computer Science & Network Security
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• 제21권4호
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• pp.65-74
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• 2021

The rapid change in gold price is an issue of concern in the global economy and financial markets. Gold has been used as a means for trading and transaction around the world for long period of time and it plays an integral role in monetary, business, commercial and financial activities. More importantly, it is used as economic measure for the global economy and will continue to play an important economic vital role - both locally and globally. There has been an explosive growth in demand for efficient and effective scheme to predict gold price due its volatility and fluctuation. Hence, there is need for the development of gold price prediction scheme to assist and support investors, marketers, and financial institutions in making effective economic and monetary decisions. This paper primarily proposed an intelligent based system for predicting and characterizing the gold market trend. The simulation result shows that the proposed intelligent gold price scheme has been able to predict the gold price with high accuracy and precision, and ultimately it has significantly reduced the prediction error when compared to baseline neural network (NN).