• Title/Summary/Keyword: Test Bank

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A Study on Numerical Analysis of Thermal Flow in Solar Lamp Bank (솔라 램프뱅크 내의 열유동 수치해석에 관한 연구)

  • Kim, Sung-Dae;Ryoo, Seong-Ryoul;Baek, Sang-Hwa;Lee, Jeong-Yong;Park, So-Jin;Kim, Chul-Ju;Ko, Han-Seo
    • Journal of the Korea Institute of Military Science and Technology
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    • v.11 no.2
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    • pp.136-143
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    • 2008
  • A three-wavelength solar bank is a very important part for a solar simulator with commercial superlux lamps. It is projected metal halide lamps to satisfy following points simultaneously: $\pm$10% of uniformity for irradiance of target area and irradiance in each wave region, and $1,232W/m^2$ of maximum solar irradiance in summer. The developed solar lamp bank has been analyzed numerically by commercial programs in this study to carry out experiments. In conclusion, designed B-type heat lamp is not concentrated in one place than designed A-type heat lamp, it is spreaded widely, and it was proved numerical computation. We suggest that solar simulator is applied to actual experiment test through heat flow numerical analysis in solar lamp bank and the lamp is applied private industry or the military using complex environmental assessment test.

Estimation method of heat flux at tube bank exposed to high temperature flue gas in large scale coal fired boilers (보일러 내부 고온가스에 노출된 전열 튜브에서의 열유속 평가 방법)

  • Jung, Jae-Jin;Song, Jung-Il
    • 한국태양에너지학회:학술대회논문집
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    • 2009.11a
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    • pp.259-264
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    • 2009
  • Most of the fossil power plants firing lower grade coals are challenged with maintaining good combustion conditions while maximizing generation and minimizing emissions. In many cases significant derate, availability losses and increase in unburned carbon levels can be attributed to poor combustion conditions as a result of poorly controlled local fuel and air distribution within the boiler furnace. The poor combustion conditions are directly related to the gas flow deviation in upper furnace and convection tube-bank but a less reported issue related to in large-scale oppose wall fired boilers. In order to develop a on-line combustion monitoring system and suggest an alternative heat flux estimation method at tube bank, which is very useful information for boiler design tool and blower optimizing system, field test was conducted at operating power boiler. During the field test the exhaust gases' temperature and tube metal temperature were monitored by using a spatially distributed sensors grid which located in the boiler's high temperature vestibule region. At these locations. the flue gas flow is still significantly stratified, and air in-leakage is minimal which enables tracing of poor combustion zones to specific burners and over-fire air ports. Test results showed that the flue gas monitoring method is more proper than metal temperature distribution monitoring for real time combustion monitoring because tube metal temp. distribution monitoring method is related to so many variables such as flue gas, internal flow unbalance, spray etc., Heat flux estimation at the tube bank with flue gas temp. and metal temp. data can be alternative method when tube drilling type sensor can't able to use.

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Assessing Bank Competition in Nepal Using Panzar-Rosse Model

  • BUDHATHOKI, Prem Bahadur;RAI, Chandra Kumar;RAI, Arjun
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.11
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    • pp.759-768
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    • 2020
  • The purpose of this study is to assess the state of competition in Nepalese banking over the period from 2010 to 2019. This study employs panel data and a non-structural Panzar-Rosse model to measure the degree of competition in the Nepalese banking industry. The first reduced-form equation is applied to gauge competition, and the second model is used to test the long-run equilibrium in the banking market. The finding reveals that the Nepalese banking market is equilibrium in the long-run. It implies that the factor prices do not affect ROA in the long-run. The result of the H-statistic shows that the Nepalese banking system is operating under the state of perfect competition and is shifted from monopolistic competition to perfect competition. The reduced-form model reveals that the interest income is positive and significantly affected by factor prices. Similarly, the macroeconomic variable GDP growth is positively related to interest income. On the contrary, the bank's specific factors risk and the number of bank branches are inversely associated with the regressand. The outcomes of the study may be advantageous to the policymakers, especially to Nepal Rastra Bank to implement monetary policy and M&A policy for the stability and growth of the financial system of Nepal.

The Moderating Role of Ownership Concentration on the Relationship between Board Composition and Saudi Bank Performance

  • HABTOOR, Omer Saeed
    • The Journal of Asian Finance, Economics and Business
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    • v.7 no.10
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    • pp.675-685
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    • 2020
  • The main purpose of this study is to investigate the potential effect of ownership concentration on the relationship between board composition and bank performance. The study employs a sample of Saudi banks listed on Saudi stock exchange (TADAUWL) over the period from 2011 to 2018. To test the study hypotheses and control for endogeneity issues, the Ordinary Least Square (OLS) and the Two-Stage Least Squares (2SLS) techniques are used. The empirical results reveal a significant negative moderating effect of ownership concentration on the association between board composition and bank performance, which confirms the study argument and supports hypotheses. The results indicate that board composition in terms of independent board members, executive board members, and non-executive board members in banks with higher ownership concentration have a weaker positive influence on bank performance. For control variables, the results are almost consistent with theoretical perspectives and previous empirical evidence. The results of this study have important implications for regulatory authorities, companies, and market participants in Saudi Arabia and countries with high concentrated ownership to understand how ownership concentration could affect corporate governance and firm performance and to identify appropriate actions to protect board composition from the influence of ownership concentration.

Comparison of Public and Private Perspectives on Central Bank CBDC - Focusing on Korean Case (중앙은행 CBDC에 대한 공공 및 민간 관점의 인식 비교연구- 한국 사례를 중심으로)

  • Kim, Bong-Kyu;Lee, Won-Boo
    • The Journal of the Korea Contents Association
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    • v.21 no.9
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    • pp.360-371
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    • 2021
  • The advent of virtual currencies has heightened interest in the Central Bank Digital Currency (CBDC) issued by the central bank. Recently, central banks in some countries have already decided to issue CBDCs or are in the test phase. This study will be an opportunity to compare public and private perceptions of central banks and explore various issues related to the introduction of CBDCs in the future through analysis methods of big data.

Does Monetary Policy Regime Determine the Nature of the Money Supply?: Evidence from Seven Countries in the Asia-Pacific Region

  • Chai, Hee-Yul;Hahn, Sang B.
    • East Asian Economic Review
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    • v.22 no.2
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    • pp.217-239
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    • 2018
  • This paper tests empirically the causal relationship between bank loans and the monetary base before and after the adoption of inflation targeting in seven Asia-Pacific countries using Toda-Yamamoto Granger non causality test and the bootstrap test for causality. The most striking finding is that the bank loans Granger cause the monetary base during the inflation targeting period in all the countries, except Japan, which was under the influence of the quantitative easing, whereas the causality appeared diverse before the inflation targeting regime. This result implies the need for the policy makers to take the endogenous nature of the money supply into account in the modern economy.

Comparison of Effects of Nursing Process Reeducation according to Academic Credit Bank System Student Nurses' Clinical Experience - Expertise, Critical Thinking Disposition, Clinical Decision Making - (학점은행제 교육과정 간호사들의 임상경력에 따른 간호과정 재교육의 효과 비교 - 숙련성, 비판적사고 성향, 임상의사결정 능력을 중심으로 -)

  • Yi, Yeo-Jin
    • Journal of Korean Academy of Nursing Administration
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    • v.15 no.2
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    • pp.275-283
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    • 2009
  • Purpose: This study investigated the effects of reeducation of nursing process on nurses' expertise, critical thinking disposition, and clinical decision making. Methods: Data were collected from March to June, 2007. The subjects were 47 Academic Credit Bank System Student Nurses. They were taught 'nursing process' during 1 semester(15weeks). 47 nurses were divided into three groups according to clinical experience(under 3 years, 3 to under 5 years, 5 years or more). After 15 weeks, the effects of education were compared using a paired t-test between pre-test and post-test. Results: There was a significant difference in the 3 to under 5 years experienced nurses's expertise(t=-3.659, p=.004) between the pre-test and post-test. There was a significant difference in the 5 years or more experienced nurses's expertise(t=-5.781, p<.001) and critical thinking disposition(t=-3.345, p=.003) between the pre-test and post-test. There were no significant differences in clinical decision making(accuracy, proficiency, and confidence) of 3 groups. Conclusion: Reeducation of nursing process is a valuable teaching and an evaluation strategy for 5 years or more experienced nurses to improve expertise and critical thinking disposition. We need to develop continuing education program for improving nurses' clinical decision making.

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A study on the electric power recovery in generator load test (부하 시험 발전기 전력회수에 관한 연구)

  • Lee, Myoungho
    • Journal of Advanced Marine Engineering and Technology
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    • v.38 no.4
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    • pp.403-408
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    • 2014
  • Lots of electric power has been wasted through the load bank usually in the container boxes during the generator load test of the ship and offshore plant in the new ship building. Therefore in this research, the quantity of wasted electric power through generator load test under construction was investigated on big shipbuilding yard and quantity of electric power that can be recovered is analyzed when produced electric power during the generator load test is connected to KEPCO Grid, according to laboratory's experiment result where recovers electric power produced from small generator connected to KEPCO Grid.

First Infestation Case of Sarcoptic Mange from a Pet Rabbit Oryctolagus Cuniculus in Republic of Korea

  • Choe, Seongjun;Kim, Sungryong;Na, Ki-Jeong;Nath, Tilak Chandra;Ndosi, Barakaeli Abdieli;Kang, Yeseul;Bia, Mohammed Mebarek;Lee, Dongmin;Park, Hansol;Eamudomkarn, Chatanun;Jeon, Hyeong-Kyu;Eom, Keeseon S.
    • Parasites, Hosts and Diseases
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    • v.58 no.3
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    • pp.315-319
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    • 2020
  • In November 2019 a 5-month-old mixed-breed rabbit presented to Chungbuk National University Veterinary Teaching Hospital, Cheongju-si, Chungbuk, Republic of Korea (Korea) with symptoms comprising pruritus, crusts on skin, poor appetite and reduced defecation. The rabbit was purchased 2 months prior from a pet shop located in a big market, and that the symptoms were first observed about 2 weeks prior to the hospital visit. Physical examination revealed that the patient had crust formation and alopecia on the nose together with lesions on the digits. A skin scraping test was performed using mineral oil and a high density of mites was observed by microscopy. Each mite showed a round, tortoiselike body with 4 comparatively short pairs of legs. The anus was located at the terminal unlike with suspected pathogen, Notoedres cati. Based on morphological characteristics, we identified the mite as Sarcoptes sp. Ivermectin was administered weekly by subcutaneous injection at a dosage of 0.4 mg/kg, and 4 weeks of follow-up study revealed the patient was fully recovered. And no more mites were detected from the case. This is the first case report of sarcoptic mange in a pet rabbit in Korea.

An Analysis of the Blood Bank Whole Blood Inventory Control (혈액은행의 효율적 재고관리에 관한 연구)

  • O Hyeong-Jae
    • Journal of the military operations research society of Korea
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    • v.8 no.2
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    • pp.37-55
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    • 1982
  • The whole blood inventory control model is developed, shown to provide an accurate representation of actual blood bank operations in Korea. The main difference of the blood bank situations between Korea and the United States is that about 50 percent of all bloods demanded, crossmatched, and held for a particular patient are eventually found not to be required for that patient in case of U.S. while in Korea the crossmatch test is not so significant and almost successful. Accordingly, the model in this paper is focused in seeking the minimum inventory level where neither shortage nor outdating bloods begin to occur, while the Jennings' model, developed in 1970 at MIT OR Center, is the inventory level somewhere between the inventory level 'band' where both shortage and outdating occur.

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