• 수산경영론집
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• 제32권1호
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• pp.1-14
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• 2001

The research on the price-volume relation in the market is very important because it examines into regular phenomenon revealed by market participants including producers and middlemen. The purpose of this study is to investigate the relationship between price and trading volume in the oyster producing market. In order to accomplish the purpose of this study, the contents of empirical analysis include the time series properties of price and trading volume, the short-term and long-term relationships between price and trading volume, and the determinants of trading volume. The data used in this study correspond to daily price and trading volume covering the time period from January 1998 to April 2001. The empirical results can be summarized as follows : First, price and trading volume follow random walks and they are integrated of order 1. The first difference is necessary for satisfying the stationary conditions. Second, price and trading volume are cointegrated. This long-run relationship is stronger from trading volume to price. Third, error correction model suggests that feedback effect exists in the long-run and that price tends to lead trading volume by about five days in the short run, that is, to be required period by digging, conveying, and peeling oystershell for selling oyster. Fourth, price and price volatility is a determinant of trading volume. In particular, trading volume is a negative function of price. It is believed that the conclusion drawn from this study would provide a useful standard for the policy makers in charge of reducing the oyster price volatility risk caused by trading volume(selling quantities).

• 한국환경과학회지
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• 제20권8호
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• pp.977-986
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• 2011

This study analyzed the characteristics of stormwater runoff in the orchard areas and quantitatively estimated effluence of nonpoint source pollutants for the volume of runoff. Two target areas under vine cultivation were each $2,000m^2$ and $1,800m^2$, located in Gyeongju City. Since grape was the only crop on the target area, the characteristics of stormwater runoff at vineyard could be evaluated independently. A total of 51 rainfall events in the vineyard area during two years(2008-2009) was surveyed, and 19 of them became stormwater runoff, with rainfall ranging 16.5 - 79.7 mm and antecedent dry period of 1-13 days. The pollutant runoff loads by volume of stormwater runoff showed BOD ranging 19.5 - 45.3% in 30% of runoff volume. The average pollution discharge rate was 32.4%, indicating small first flush effect of BOD. The range of SS concentrations was 5 - 52.0% in 10% of runoff volume, showing the average 28.7% of discharge rate, about 3 times more than rainfall effluent. TOC and TN appeared to be similar to the results of BOD, the average discharge rate of 30.9% and 30.6% for TOC and TN, respectively, for 30% of stormwater runoff volume. Average discharge rate of COD and TP in the same runoff volume was 35.1% and 36%, respectively, showing comparatively high discharge ratio. As the targeted vineyard area was permeable land, the pollution load ratio against rainfall-runoff volume appeared to be 1:1, implying no strong first flush effect for all the survey items.

• 사상체질의학회지
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• 제3권1호
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• pp.201-217
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• 1991

In order to investigate experimental effects of Yangkyuksanwha-Tang, which is the typical prescription for diseased SOYANGIN, on diabetes rats, the observation and measurement was made on the content of volume of blood glucose, total cholesterol, triglyceride, phospholipid, total protein, electrolyte($K^+$, $Na^+$) in serum, by dosing the cooked Y.S.T. to diabetic rats, induced by streptozotocin and following result was obtained. 1. The volume of blood glucose, in the diabetes rats, was decreased significantly, and remarkable decrease of blood glucose was shown in the Y.S.T. (12.5ml/kg) dosed group, after 4weeks of experiment. 2. The volume of total cholesterol of blood serum was decreased notably, especially remarkable reduce of total cholesterol was shown in the Y.S.T. (12.5ml/kg) dosed group after a week. 3. The volume of triglyceride in the blood serum of diabetic rats, induced by the streptozotocin was decreased after 4 weeks, and remarkable decrease was shown in the Y.S.T. (12.5ml/kg) dosed group after 2 weeks of experiment. 4. The volume of the phospholipid in the diabetes rats, was decreased significantly in the Y.S.T. (12.5ml/kg) dosed group after 2 weeks of experiment. 5. The volume of total protein of diabetes rats, was increased in all group, and the remarkable increase was shown in the Y.S.T. (12.5ml/kg) dosed group after 4 weeks. 6. The volume of the sodium in the Y.S.T. (12.5ml/kg) dosed group, was notable in each Y.S.T. dosed group (1.25ml/kg, 12.5ml/kg) after a week experiment. According to above results, It is expected that Y.S.T. applied to SOYANGIN, can be used for medical treatment of diabetes with effect. But because the effect can be somewhat different depending upon dosage, appropriate operation on clinic is needed, for the best curing effect.

• 한국산업보건학회지
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• 제29권3호
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• pp.414-419
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• 2019

Objectives: The objective of this study was to evaluate the inhibitory effect of non-thermal dielectric barrier discharge (DBD) plasma by air volume against Mycobacterium tuberculosis (MTB). Methods: Plasma generators (TB-300, Shinyoung Airtec, Seongnam-si, Korea) were operated in a 2A type biosafety cabinet. The plasma generator was set to a wind flow rate of 14 ($80m^3/h$), 18 ($110m^3/h$), and 22 ($150m^3/h$), and exposure times were set to 0 hours, 3 hours, 6 hours, 9 hours, and 24 hours. Results: The inhibitory effects of plasma at air volume 14 with prolonged exposure time of three hours was 20%, 64% at six hours, 82.3% at nine hours, and 100% after 24 hours exposure. With air volume of 18, the inhibitory effects upon plasma exposure were 36% for three hours, and 100% from 24 hours. Greater air volume resulted in greater inhibition of tuberculosis bacterial growth. In particular, the maximum inhibitory effect (100%) was shown in air volume of 22 ($150m^3/h$) after three hours of plasma exposure. Conclusions: The results showed the correlating inhibitory effects of plasma on the growth of MTB in combination with increasing plasma exposure time and air volume.

• 무역상무연구
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• 제72권
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• pp.139-160
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• 2016

Using the gravity model, this paper analyzes empirically how the world trade in goods is affected by regional trade agreements(RTAs) which have been spreading rapidly since the mid-1990s. This paper attempt to do the panel data analysis about 174 countries during the period of 1994-2008. These panel data include 157 RTAs. It is meaningful that this paper uses comprehensive data to analyze the net effect of regional trade agreements on the global trade volume. This provides a clue as to the answer to the stumbling block debate raised early in the regional trade agreement. Also, confirming how the participation of the WTO affected the trade volume among the member countries, the WTO-related dummy variables are additionally introduced to this gravity model. And as far as we know, the state system-related variables is first considered in this model. This variable reflects the social and cultural environments of countries as the proxy variable representing the sociocultural homogeneity. In all regressions, joining to the WTO and consistency of the state system have a positive effect on increasing the trade volumes between countries. According to the analysis of RTA trade effects, RTAs, on average, increase the volume of trade within the RTA region by 27%~37%, and decrease the volume of trade between the regional and the non-regional nation by 1.2%~3.4%.Therefore, the net effect of regional trade agreements on the promotion of global welfare is positive. For robustness check, we also introduce the interaction term of the dummy variable which reflects the RTA tightening and the continuous variable which reflects the distance effect. As a result, the RTAs alleviate the trade-decreasing effect which is caused by the distance between the countries.

• 감성과학
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• 제19권2호
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• pp.19-26
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• 2016

기존 연구들에서는 사람들이 길고 가는 원통형 용기의 부피를 짧고 넓은 원통형 용기의 부피보다 크다고 지각한다는 점을 밝혀왔다(예, Raghubir & Krishna, 1999; Wansink & Van Ittersum, 2003). 본 연구에서는 이러한 신장 효과가 상자형 용기에서는 반대로 나타나는 현상을 밝히었다. 가설은 상자형 용기의 행동 유도성으로부터 도출되었다. 두 개의 연구에서 참가자들은 짧고 넓은 사각 상자 용기의 부피가 길고 가는 사각 상자 용기의 부피보다 더 크다고 지각하였다. 이 효과는 자극의 제시 방법(그림, 연구 1; 실제 모형, 연구 2)이나 선택지 유형(둘 중 큰 것을 고르는 선택지, 연구 1; 둘 중 큰 것을 고르거나 같은 경우를 고르는 선택지, 연구 2)에 상관없이 일관되게 나타났다. 또한, 서로 다른 문화적 배경을 지닌 참가자 집단(미국인 참가자, 연구 1; 한국인 참가자, 연구 2)에서 동일한 효과가 나타났으며, 용기 안의 내용물이 물(연구 1)인 경우뿐만 아니라 전반적인 액체 음료(연구 2)라고 설정했을 때에도 같은 결과가 나타났다. 본 연구에 대한 이론적이고 실제적인 함의가 논의되었다.

• 패션비즈니스
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• 제13권6호
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• pp.137-146
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• 2009

This study analyzed hierarchy of image for visual evaluation of flare skirt. This study analyzed expression words about flare skirt with frequency data of image expression words with different length and volume of flare. Stimuli for the study were set to be 4 different volume of flare ($90^{\circ}$, $180^{\circ}$, $270^{\circ}$, $360^{\circ}$) and 3 different length of skirt(48cm, 58cm, 68cm). Stimuli were made by using I-Designer which is Virtual Sewing System. From simulation of flare skirt, the subjects were asked to write down suggested adjective freely and selected 210 adjectives. With this, we chose total 38 adjectives considering frequencies in the pre-study. And we analyzed the combination process of expression words according to construction factor of flare skirt and hierarchy of image from dendrogram which was resulted by hierarchical cluster analysis. 'Feminine' got high score in all 12 flare skirt. When the skirt was short, it was vivid, and as the skirt got longer, ordinary and pure image showed. Also, as the volume of flare got larger, the average of visual effect was higher than visual image. Visual hierarchy construction according to construction factors of flare skirt could be divided into visual image and visual effect, and visual image was shown to be form 'A type - large volume of flare and short skirt length', 'H type-small volume of flare and short skirt length' and 'X type - large volume of flare and long skirt length'.

• 한국산업융합학회 논문집
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• 제5권1호
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• pp.53-64
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• 2002

The purpose of this study was to predict the future urban activities effectively and rationally. For the purpose, a simulation model, based on SD, was built by integrating economic activities, land use and traffic of a city and by dividing Daegu Metropolitan City into seven districts and one county. To identify the effect of the development of a new city in the Dalsung County area, the future population and traffic volume of the city were predicted, using the model. The results are summarized as follows. The future population according to the development of a new city in the Dalsung County area was predicted, and the effects before and after the development twenty years later were compared. The future population of the Dalsung County was found to have slightly increased, whereas that of the adjoining Dalsuh Metropolitan District was found to has slightly decreased. For the other districts, there were no changes of the future population. It was found, therefore, that the development of a new city would have no effect on other districts. Then, the traffic volume according to the development of a new city in the Dalsung County area was also predicted. It was found that in the initial stage the traffic volume would increase with the increase in population of Dalsung County. It was predicted that particularly,. the traffic volume for the purpose of business would greatly increase. The traffic volume of Dalsuh Metropolitan District showed a slight decrease, whereas for the other districts, there were no changes of the traffic volume.

• The Journal of Asian Finance, Economics and Business
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• 제7권8호
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• pp.51-59
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• 2020

The objective of this study is to enrich the literature by investigating the impact of introduction of index future trading on spot market returns and trading volume in Vietnam. Data used in this study mainly consist of daily VN30-Index and market trading volume series during the period from February 6^th, 2012 to December 31^st, 2019. Using OLS, GARCH(1,1) and EGARCH(1,1) models, the empirical findings consistently confirm that the introduction of index future trading has no impact on the spot market returns. In addition, the results of the EGARCH(1,1) model indicate that the leverage effect on the spot market volatility is existence in HOSE. Specifically, bad news has a greater effect on the market volatility than good news of the same size. Moreover, our empirical findings reveal that the introduction of index future contracts has the positive impact on the underlying market trading volume. Specifically, the trading volume of the post-index futures introduction increases by 7.5 percent compared with the pre-index futures introduction. Finally, the results obtained from the Granger causality test for the relationship between the spot market returns and the future trading activity confirm that only uni-directional causality running from the market returns to the future trading activity exists in HOSE.

• 무역학회지
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• 제41권5호
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• pp.373-389
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• 2016

본 연구는 총 무역액 중 95% 이상이 해상 수송되는 현실을 바탕으로, 해상 수송의 근간이 되는 항만의 자본스톡과 무역 규모 간의 회귀분석을 수행하는 논문이다. 패널 데이터 분석 및 고정 효과 모형 분석을 통해 항만 SOC가 무역 규모에 어떠한 영향을 미치는지를 실증분석 하였다. 항만 SOC를 6개 부문별로 분류하고, 장래 부문별 투자가 이루어졌을 때 무역 규모는 각각 얼마만큼의 영향을 받는 지를 추정하였다. 이와 더불어 LR(Likelihood ratio) 검정을 실시하여 고정효과 모형(Fixed Effects Model)을 통해 회귀분석 하였다.