• The Journal of Asian Finance, Economics and Business
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• 제8권4호
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• pp.653-663
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• 2021

There has been a massive increase in household debt in China, especially in the last five of years. Learning from past experiences, the country needs careful forecasting that may help to form new policies or make amendments to the existing ones. This research paper aims to highlight the impact of the monetary policy on household debt in China. The study covers the time period from 1996 to 2020 The study employs a cointegration test, Autoregressive Distributed Lag Bound Test (ARDL) approach, a Augmented Dicky Fuller (ADF) and PP test (PMG) and time series data. The findings suggest on a quantitative analysis using a time-series model in which gdp per capita and interest rate has a positive impact on household debt whereas, cpi doesn't have significant impact. In a short-term variables relationship, household debt responds more to an increase in income than in the long-term. Also, the impact of interest rate changes on household debt is lower than income in the short run.The research suggests that there should be some restrictions on household debt and consumer financing provided to citizens and for this, appropriate leverage measures should be taken in order for the central bank to sustain robust macroeconomic conditions.

• 설비공학논문집
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• 제7권4호
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• pp.556-565
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• 1995

The physical model of interest is based upon the concentric cylinder, where the outside cylinder is filled with optically thick and high temperature phase change material(PCM). The fluid is flowing through the inside cylinder to transfer the appropriate energy. The fluid is flowing through the inside cylinder to transfer the appropriate energy. The governing equations for the phase change material including internal thermal radiation and for the turbulent transfer fluid have been employed and numerically solved. The optically thick phase change justifies the P-l spherical harmonics approximation, which is believed to be appropriate choice particularly for the much coupled problem like in this study. The solid/liquid interface, temperature distribution within the PCM and the heat flux from the PCM to the transfer fluid have been obtained and compared with those of laminar transfer fluid. The numerical results show that the turbulent transfer fluid accelerates the solid/liquid interface and results in the increase of heat transfer rate from the PCM. The internal thermal radiation within the PCM, however, does not always playa role to increase the heat transfer rate throughout the inside cylinder. It is believed that the combined heat flux has been picked up more in the inflowing area than in the pure conductive phase change material.

• KIEAE Journal
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• 제12권6호
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• pp.63-68
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• 2012

The aim of this study is to evaluate current policies and suggest the way of overcome financial impediments to the energy efficiency function of residential buildings. Based on this analysis the paper enumerates policy recommendations for enhancing how energy efficiency is addressed in building codes and other policies for residential buildings. For achieving this goal, this study conducts the cost-benefit analysis to measure total energy savings and associated total cost. The results of study shows that the cost is greater than the benefit from 1st to 4th year but the benefit will be greater than the cost for the rest of the year. In addition, this study designs a financial support method and an implementation mechanism. Investment from the capital market will take place with the government's interest subsidy. Home retrofit will be undertaken with low interest rate with 2.5% and the return will be paid by a monthly energy bill. The results of this study provides some useful insights for the policy design, including the importance of developing information tools for providing appropriate information to households.

• 한국해양공학회지
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• 제11권4호
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• pp.239-248
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• 1997

The nesting of parts cut on raw steel plate has been a subject of interest to the shipbuilding industry for many years. "Nesting" is defined operation of layout of the parts on the raw material with minimizing the waste rate. Therefore, it is very important to optimize the cutting area. Since the existing nesting programs are prepared for expensive workstations and the expert, it is needed to develop nesting program for personal computer to improve the technology of small/middle sized shipyards and their productivity. This study involves development and application of appropriate optimization technique to solve the problem of plate nesting. And the appropriate D/B for storing nesting data developed, the function of D/B is introduced in this paper.his paper.

• 대한교통학회지
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• 제28권2호
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• pp.65-75
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• 2010

공공투자사업평가 시 사회적할인율의 높고 낮음에 따라 비용 편익분석의 결과가 상이하다는 점에서 적정 수치는 매우 중요한 요소이다. 그리고 사회적할인율의 개념을 무엇으로 적용하는 것이 합리적인지에 대한 많은 논란과 연구가 현재까지 진행되고 있다. 본 연구에서는 사회적할인율의 개념을 크게 세 가지 사회적 시간선호율, 사회적 투자수익률 그리고 이 둘을 가중평균 한 값으로 구분하였다. 추정방법으로는 사회적 시간선호율의 경우 소비이자율과 Pearce and Ulph식을 사용하였고, 사회적 투자수익률은 민간 총 자본 수익률을 사용하였다. 그리고 가중평균은 투자의 잠재가격을 이용한 Squire, L., Herman G. van der Tak식과 공공투자와 대치되는 민간투자와 민간 소비지출비율을 이용하여 추정하였다. 본 연구에서는 현재 시점의 사회적할인율을 추정하기 위해 연대구분을 1990년대, 2000년~2003년, 2004년~2008년으로 각각 구분한 후, 과거 한국개발연구원에서 제시된 1999년 7.5%, 2004년 6.5%, 그리고 2007년~현재 5.5%와 각각 비교하였다. 추정결과는 1990년대 6.6~10.7%, 2000년~2003년 4.0~7.0%, 2004년~2008년 2.4~3.9%로 각각 추정되었다. 현재 공공투자 사업평가에 사용되고 있는 사회적할인율 5.5%는 본 연구의 추정결과 보다 약1.6~3.1% 높은 것으로 나타났다. IMF이후 급격하게 하락한 소비이자율은 계속적으로 낮아지고 있고 앞으로도 지속될 것으로 예측하고 있다. 따라서 공공투자 사업의 목적인 현 세대부터 장래세대까지 모두를 고려한 사회적 자원의 재분배를 실현시키기 위해 선 현재의 사회적할인율은 점차 하향조정할 필요가 있다.

• Journal of applied mathematics & informatics
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• 제34권1_2호
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• pp.75-84
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• 2016

The objective of this work is to perform a geometric analysis of the net present value (NPV) and Internal Rate of Return (IRR), defining analytics and in verifying the relationship between geometric properties of such functions. For this simulation, was used the values of the cash flows for each period identical and equal to US$ 200.00 cash, the initial investment US$ 1,000.00 and investments of each identical and equal to US$ 50.00 period. In addition, the discount rate and time were considered a maximum of 2 years (24 months) at a rate between 0 and 100%. The geometric analysis of the characteristics obtained from the expressions of the Net Present Value and Internal Rate of Return possible to observe that besides the analytical dependence between these quantities , the geometric relationships are relevant when studied in relation to the zero NPV and expressed a great contribution the sense of a broad vision for the administrator in the analysis of analytical variables that in uences the balance sheet of the company.

• 디지털콘텐츠학회 논문지
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• 제8권4호
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• pp.573-579
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• 2007

리키버킷 사용에 관해서 많은 연구가 있었다. 고속네트워크에서 제어기능을 다루는데 리키버킷 방식의 사용에 관해서 많은 관심을 가지고 있다. 본 논문에서 제안한 버스트 토큰 fill 방식은 최고율을 유지하고 버스트 크기도 조절하며 평균율에 그다지 큰 변화를 주지 않으면서 좋은 효과를 기대 할 수 있는 방법을 제안 하였다. 이러한 방법을 사용함으로써 어떤 효과가 있을지를 보여 주었다. 그러나 이방법의 사용에 있어서 on-off 방식과 같은 버스트 데이터의 특별한 형태에 보다 효율적이며 모든 데이터에 적용하는 데는 더욱 세심한 주의가 필요하다.

• 한국정보통신학회논문지
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• 제20권11호
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• pp.2149-2154
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• 2016

현대 사회는 건강한 삶에 대한 사람들의 관심이 깊어지고 있다. 이에 따라 건강과 관련된 연구 및 서비스 개발이 진행되고 있는 실정이다. 이를 위해 IT 분야에서는 의료 분야의 정보를 활용한 헬스케어 시스템들이 개발되고 있다. 개발된 시스템들은 PC 및 스마트 TV를 활용하거나 스마트 폰을 이용하여 사용자에게 의료 분야의 정보 및 운동과 관련된 정보를 제공해주지만 사용자의 신체 정보를 정확히 분석하는 알고리즘이나 시스템은 개발 단계인 실정이다. 이를 해결하기 위해 본 논문에서는 사용자의 BMI(Body Mass Index) 지수와 BMR(Basal Metabolic Rate) 수치를 분석하여 사용자에게 정보를 제공하는 시스템을 제안한다. 사용자에게 제공하는 정보는 기존의 피트니스 시스템들처럼 움직임을 감지하고 이로 인해 소모한 칼로리 값을 보여주는 것과 달리 사용자의 신체에 적절한 운동 강도, 적정 수준의 운동량, 적합한 운동 기구를 추천해준다. 이로 인해 사용자는 추천 받은 정보를 기반으로 효율적인 운동을 진행할 수 있을 것으로 사료된다.

• 수산경영론집
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• 제26권1호
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• pp.79-104
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• 1995

Dividend Policy involves the decision to pay out earnings versus retaining them for reinvestment in the firm, and dividend policy decisions can have either favorable or unfavorable effects on the attainment of firm's objective. This paper is to examine the present status of dividend policy of the Pusan Cooperative Fish Market, and to suggest the optimal dividend policy decisions appropriate for achieving its objective, which is to promote the fishermen's benefits and protect the interest of consumers. There are two types of dividend that the Pusan Cooperative Fish Market pays to the equity owners : (1) dividend on capital and (2) equalized patronage dividend. During'90s, while the rate of dividend on capital ranged from 1.7% to 2.8%, that of equalized patronage dividend ranged from 13.9% to 22.9%. Therefore, the rate of total dividend on capital including revolving funds has been about 20%, which turns out to be much higher than those of companies listed in the stock market. According to the current dividend data, the Pusan Cooperative Fish Market focuses on the equalized patronage dividend and the dividen on capital is the secondary type of dividend. In addition, the interesting feature of equalized patronage dividend is that it is supposed to be reinvested into capital by the Articles of the Fish Market, as soon as the Fish Market pays it to its members. Finally, this paper suggests the rational dividend policy of the Fish Market that is able to help its objective to be achidved more efficiently. The overall direction of the rational dividend policy can be summarized as follows ; (1) The level of cash dividend on capital should be increased enough to reflect the market interest rate. (2) The subsidy of working capital to some member fisheries cooperatives as quasi- dividend should be cut off steadily. (3) The equalized patronage dividend should be replaced by the original patronage dividend whose level is determined by the volume of each member's purchase. (4) In the long-term, it is necessary to improve the system of revolving funds in the way that revoloving funds could serve to complement equity capital for only a fixed time, after which they ard repaid to the members.

• 한국통신학회논문지
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• 제21권1호
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• pp.33-46
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• 1996

Inthis paper, we investigate the compatible coding technique, which receives much interest ever since the introduction of HDTV. First, attempts have been made to analyze the theoretical transform coding gains for various hierarchical decomposition techniques, namely subband, pyramid and DCT-based decomposition techniques. It is shown that the spatical domain techniques proide higher transform coding gains than the DCT-based coding technique. Secondly, we compare the performance of these spatial domain techniques, in terms of the PSNR versus various rate allocations to each layer. Based on these analyses, it is believed that the pyramid decomposition is more appropriate for the compatible coding. Also in this paper, we propose a hybrid prediction pyramid coding technique, by combining the spatio-temporal prediction in MPEG-2[3] and the adaptive MC(Motion Compensation)[1]. In the proposed coding technigue, we also employ an adaptive DCT coefficient scanning technique to exploit the direction information of the 2nd-layer signal. Through computer simulations, the proposed hybrid prediction with adaptive scanning technuque shows the PSNR improvement, by about 0.46-1.78dB at low 1st-layer rate(about 0.1bpp) over the adaptive MC[1], and by about 0.33-0.63dB at high 1st-layer rate (about 0.32-0.43bpp) over the spatio-temporal prediction[3].