• 통상정보연구
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• 제12권4호
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• pp.171-192
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• 2010

In general, a stock index and its individual stocks are assumed to follow a random walk. A stock index is an important source of information and one that is seen by people everyday, regardless of their investment intentions. This paper examines the correlation between the KOSPI-the index that best reflects the Korean stock market and the macro - economic variables that have been found to influence the index by previous studies. The sample period considers the years after 2000 when the Korean stock market matured as restrictions on foreign investors were removed. For this purpose, a Vector Error Correction Model (VECM) and KOSPI equation with a general pacific approach were used. This paper aims at verifying the factors that determined the KOSPI after 2000 and at examining whether there was structural change in the investment environment. It also investigates changes in the factors determining the KOSPI's performance as a result of structural changes in the investment environment. The V AR (Vector Autoregressive) model including the nine variables was selected as a baseline model whose stability was tested using the unit root test. The results from the VECM and the structural changes in the investment environment can be summarized by the following Inner story points.

• 품질경영학회지
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• 제35권4호
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• pp.26-37
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• 2007

The demand of ubiquitous home network system is rapidly increasing in Korea as each construction enterprise makes a huge effort to introduce it to apartment complex. However, the design of home network system is rather technology oriented than the customer focused. Lack of knowledge about customer needs is an obstacle in spreading the ubiquitous home network system to the market regardless of technology development. In this paper, we propose a HCSI(customer satisfaction index for home network system) using an SEM(structural equation model) where structural relationship among several factors influential on users' satisfaction is considered. This model enables to calculate the satisfaction index for target customer group so that one can provide necessary feedback information for improvement of the home network system used for each group.

• 한국디지털건축인테리어학회논문집
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• 제12권1호
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• pp.89-98
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• 2012

While the housing transaction price of Seoul tends to be stagnant or declining in line with the housing market recession since 2007, the jeonse price keeps continual increase. Such flow of jeonse price change has a serious influence on ordinary person's housing stability seriously. Therefore, it is very meaningful in terms of social policy to analyze the trend of recent jeonse price change. This study aims to have an empirical analysis of structural characteristics of the trend of recent jeonse price change. After the review of various previous studies, this study selected housing jeonse price index, non-sold house quantity, jeonse vs. transaction price rate, and housing construction performance as analytical variables, and employed monthly time series resources from January 2007 to April 2011. As a result, when the housing supply reduced, the potential quantity for jeonse market reduced that occurred unbalance of supply and demand in jeonse market. In turn, it caused the increase of jeonse price. And, in case of jeonse vs. transaction price rate change, the rate increased which means the increase of required rate of return of invested demand. As such, the increase of market risk degenerates the investment sentiment which caused the reduction of quantity for jeonse market as a submarket.

• 한국병원경영학회지
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• 제5권2호
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• pp.40-58
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• 2000

Nurses are medical personnel, who play a key role in supporting patient care, so it is important to supply them adequately in balance with ever increasing medical demand. But there appears severe shortage of nurses in some hospitals because of their uneven distribution, especially in small sized-hospitals and rural-hospitals. As nationwide distorted distribution of nurses in Korea is just like what monopsony model(a kind of market structure model) tells us, it is attempted to explain this situation of nurse labor market in Korea on the basis of monopsony model and presented in this paper. Specifically, determinants of nurse wage and the level of their relative employment were examined, and monopsony impact on their wage and the level of relative employment controlling those determinants were studied. Major results of this study arc as follows. The most important determinant of nurse wage level in this study was the wage level of a local community where each hospital located Hospital owner's characteristics an educational function of each hospital were also important factors. With these factor controlled, it was found that monopsony power of each hospital was negativel associated with nurse wage level as expected. 1% increase in monopsony power of hospital(measured by Herfindah-Hirschman Index) reduced nurse wage by $5,674{\sim}19,19$ won(in Korean currency). With regard to the level of relative employment, the most important determinant wa the capacity for supplying nurses of the local community. Again, hospital owner characteristics and educational function of each hospital were also important. With these factors controlled, it was found that monopsony power of each hospital was negative associated with the number of nurses per bed, as expected. 1% increase in monopsony power of each hospital(again measured by Herfindah-Hirschman Index) reduced the number of nurses per 100 bed as much as $0.46{\sim}0.67$. In conclusion. structural factors of nurse labor market influence the instability of nurse labor supply in Korea. Further consideration for these market structural characteristics needed for policy making related to nurse resource allocation.

• 한국조사연구학회지:조사연구
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• 제7권1호
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• pp.55-84
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• 2006

본 연구는 이동통신시장의 주요통계지표를 이용하여 이동통신시장의 산업수명주기(Industry Life Cycle)(태동기-성장기-성숙기)를 유형화 하고자 하였다. 분석 모형은 2단계로 구분되며, 1단계 분석에서는 이동전화보급률을 기준으로 이동통신시장의 발전단계를 유형화하고, 2단계 분석에서는 주요통계지표를 비교분석하여 이동통신시장의 발전단계별 시장특성을 제시한다. 1단계 분석결과 군집분석을 이용하여 이동통신시장의 발전단계(태동기-성장기-성숙기)별로 국가군이 유형화되었으며, 발전단계별 군집은 국가경제의 발전수준과 상관관계가 있는 것으로 파악되었다. 2단계 분석결과 주요통계지표에 대한 비교분석을 통한 이동통신시장의 발전단계별 시장특성은 다음과 같다. 첫째, 시장구조지표 중에서 HHI(시장집중률)은 성장기와 성숙기보다 태동기에 매우 높은 것으로 나타났다. 둘째, 시장효율성지표에서 ARPU(사용자당 평균수익)와 RPM(분당수익)은 태동기에서 성장기, 성숙기로 갈수록 높았다. 셋째, 시장성과지표인 EBITDA 마진율은 태동기에는 매우 높지만 성장기, 성숙기에는 상대적으로 낮은 것으로 파악되었다. 결과적으로 이동통신시장의 주요통계지표를 이용하여 특정 국가의 이동통신시장이 산업수명주기 상 어떤 위치에 있는지를 파악함으로써 시장환경 변화에 대응할 수 있는 정책적, 전략적 시사점을 찾을 수 있었다.

• 한국산학기술학회논문지
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• 제16권10호
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• pp.6534-6542
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• 2015

본 연구에서는 4개 뮤추얼펀드 유형을 대상으로 한국시장에서의 펀드 성과와 펀드 현금흐름 간의 관계를 분석하였다. 주별 및 월별 자료를 사용한 분석결과는 다음과 같다. 첫 번째, 양자 간의 관계는 펀드의 유형에 따라 다르게 나타나고 있으며, 같은 주식형 펀드인 일반주식형 펀드와 인덱스형 펀드 역시 다른 결과를 보여주고 있다. 두 번째, 양자 간의 관계는 펀드시장의 구조변화 이전/이후 기간에서 다른 양상을 보여 시장의 구조변화가 동 관계에 무시할 수 없는 영향을 미쳤음을 보여주었다. 세 번째, 수익률을 추구하는 현금흐름(return chasing flow)은 채권형 펀드에서 가장 강하게 나타났으며, 일반주식형펀드 및 MMF에서는 구조변화 이후 기간에서만 나타났다. 그러나 인덱스형 펀드에서는 전혀 관측되지 않았다. 네 번째, 펀드현금흐름이 향후의 펀드 성과에 미치는 영향은 오직 MMF에서만, 그리고 구조변화 이후의 기간에서만 관측되었다.

• 유통과학연구
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• 제14권1호
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• pp.93-102
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• 2016

Purpose - The purpose of paper is studying the static and dynamic side for long-term memory storage properties, and increase the explanatory power regarding the long-term memory process by looking at the long-term storage attributes, Korea Composite Stock Price Index. The reason for the use of GPH statistic is to derive the modified statistic Korea's stock market, and to research a process of long-term memory. Research design, data, and methodology - Level shifts were subjected to be an empirical analysis by applying the GPH method. It has been modified by taking into account the daily log return of the Korea Composite Stock Price Index a. The Data, used for the stock market to analyze whether deciding the action by the long-term memory process, yield daily stock price index of the Korea Composite Stock Price Index and the rate of return a log. The studies were proceeded with long-term memory and long-term semiparametric method in deriving the long-term memory estimators. Chapter 2 examines the leading research, and Chapter 3 describes the long-term memory processes and estimation methods. GPH statistics induced modifications of statistics and discussed Whittle statistic. Chapter 4 used Korea Composite Stock Price Index to estimate the long-term memory process parameters. Chapter 6 presents the conclusions and implications. Results - If the price of the time series is generated by the abnormal process, it may be located in long-term memory by a time series. However, test results by price fixed GPH method is not followed by long-term memory process or fractional differential process. In the case of the time-series level shift, the present test method for a long-term memory processes has a considerable amount of bias, and there exists a structural change in the stock distribution market. This structural change has implications in level shift. Stratum level shift assays are not considered as shifted strata. They exist distinctly in the stock secondary market as bias, and are presented in the test statistic of non-long-term memory process. It also generates an error as a long-term memory that could lead to false results. Conclusions - Changes in long-term memory characteristics associated with level shift present the following two suggestions. One, if any impact outside is flowed for a long period of time, we can know that the long-term memory processes have characteristic of the average return gradually. When the investor makes an investment, the same reasoning applies to him in the light of the characteristics of the long-term memory. It is suggested that when investors make decisions on investment, it is necessary to consider the characters of the long-term storage in reference with causing investors to increase the uncertainty and potential. The other one is the thing which must be considered variously according to time-series. The research for price-earnings ratio and investment risk should be composed of the long-term memory characters, and it would have more predictability.

• 무역학회지
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• 제47권6호
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• pp.229-246
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• 2022

In order to understand the economic damage of economic sanctions on trade between Korea and Russia, a trade structure analysis was conducted through statistics on import and export trade between Korea and Russia. Through the structural analysis of product trade, we tried to accurately analyze the current status of product trade between Korea and Russia. In the trade structure analysis, it was confirmed that the trade in goods between Korea and Russia decreased the most in market share and trade concentration. However, trade specialization, comparative advantage by market, and intra-industry trade index were not significantly affected despite strong economic sanctions. from Russia's point of view Smart measures are needed to address the current situation to avoid a greater economic downturn. The end of the war and the restoration of partnership with other countries are considered the most beneficial solutions for Russia and all countries, but it is difficult to predict how the war will go or what economic situation Russia will be in after the war.

• 한국항만경제학회지
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• 제31권3호
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• pp.141-153
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• 2015

부산항의 수출이 우리나라 항만의 수출에서 차지하는 비중은 계속해서 감소하고 있는데, 이와 같은 항만의 위상변화는 해당 항만의 주요 수출시장과 수출품목에서 그 원인을 찾아볼 수 있다. 본고는 중국에 대한 부산항의 주요 10개 수출품목의 경쟁력이 어떻게 변화할 것인가를 밝히기 위해 시장비교우위(Market Comparative Advantage: MCA)지수를 도출하여 변화하는 행태를 분석함과 동시에 MCA지수를 대 중국 수출비중과 중국의 수입비중으로 분해한다. 부산항의 수출경쟁력은 MCA지수가 하락한 HS8703 품목을 제외한 9개 품목에서 상승하나, 이 중 7개 품목에서 중국의 수입비중이 감소함을 보인다. 그런데 중국의 수입비중이 줄어든다는 것은 시장비교우위지수가 상승하여도 수출증가를 낙관할 수 없다는 것을 의미한다. 중국의 수입비중이 감소하는 7개 품목에서 5개 품목은 대중 수출비중이 상승하나 2개 품목에서는 대중 수출비중도 함께 하락하여 MCA의 상승에도 불구하고 수출전망이 어둡다는 것을 보인다. 결국 HS3920, HS8708, HS8703과 같은 3개 품목에서만 수출경쟁력 향상이 수출전망을 밝게 한다는 것을 밝힌다. HS8708 품목이 부산항의 대중 수출에서 1위를 차지하는 품목이라는 점은 부산항의 대중 수출에 긍정적인 요소가 될 수 있으나, 10개 품목 중 3개 품목에서만 수출전망이 밝다는 것은 부산항의 대중 수출에 대해 전반적인 검토가 있어야 한다는 것을 보인다.

• 지역연구
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• 제34권1호
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• pp.3-17
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• 2018

본 논문은 임대료시장의 주기변화에 따른 헤도닉 모형의 임대료 결정요인의 영향력 변화를 분석하였다. 임대료지수를 구축하여 분석한 결과 금융위기가 전환점이 되어 서울시 임대료 시장이 하락기와 상승기로 구분됨을 밝혔으며 주기에 따른 헤도닉 모형의 특성변수의 회귀모수 변화를 고찰하였다. 분석은 강남오피스와 도심오피스로 구분하여 실시하였으며 권역에 상관없이 일관된 변화를 보인 개별회귀모수로서는 토지가격, 지하철역에서의 거리, 건물규모, 건물연한 및 전환이율로 밝혀졌다. 상승기에는 건물의 규모가 클수록 임대료가 높아지는 경향이 있으며 건물이 오래될수록 임대료 하락요인으로의 영향이 커지는 경향이 있는 것으로 나타났다. 전환이율 역시 임대료에서 차지하는 비중이 상승기에 높아짐을 보여준다. 토지가격의 영향은 줄어들고 교통편의성의 장점은 약해지고 있어 상승기에는 지리적 이점의 영향력이 감소하고 건물 특성의 영향력이 상대적으로 커지는 실증적 증거를 제시하였다.