• 제목/요약/키워드: unbalanced data distribution

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Determinants of Liquidity of Commercial Banks: Empirical Evidence from the Vietnamese Stock Exchange

  • NGUYEN, Hanh Thi Van;VO, Dut Van
    • The Journal of Asian Finance, Economics and Business
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    • 제8권4호
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    • pp.699-707
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    • 2021
  • The objective of this study is to examine the determinants of the liquidity of 17 commercial banks listed on the Vietnamese Stock Exchanges, HOSE, HNX and UPCoM. The study uses the quarterly audited financial statements from the first quarter of 2006 to first quarter of 2020; it includes 496 observations. Data on GDP and inflation are compiled from the International Monetary Fund and the General Statistics Office of Vietnam. Once collected, the data were organized along the line of unbalanced panel data. The results show that total asset size, return on total assets, and credit growth are positively associated with the liquidity of the listed banks; whereas the interaction between the bank size and the return on total assets has a negative impact on the liquidity of commercial banks listed on the HNX, HOSE, UPCoM. In order to maintain good liquidity, commercial banks need to focus on effective credit growth, ensure a high rate of profit over total assets, and at the same time focus on developing the scale of total assets. However, the development of the size of the total assets should be noted in the balance between the total assets and the rate of return on the total assets.

미술품 거래 빅데이터를 이용한 작가 분석 시스템 구현 (Art transaction using big data Artist analysis system implementation)

  • 이승경;임종태
    • 서비스연구
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    • 제11권2호
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    • pp.79-93
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    • 2021
  • 국내 미술시장 규모는 2018년 기준으로 최근 5년간 매년 21.9%씩 증가하는 성장세를 유지하고 있다. 미술품 유통 플랫폼은 화랑과 오프라인 경매 방식, 그리고 온라인 경매로 다양해지고 있다. 미술시장은 작품의 제작(창작), 유통(무역), 소비(매수) 등 3개 분야로 구성되어 있으며, 경제적 가치는 물론 예술적 가치에 대한 인식이 확산되면서 투자 수단으로써 관심도가 높아지고 있다. 작품을 재테크 수단으로 생각하는 소비자는 작품의 객관적 정보에 대한 욕구가 높아지지만, 예술시장 유통 분야의 정보 제공이 폐쇄적이고 불균형해 객관적이고 신뢰할 수 있는 통계를 수집·분석하는 데 한계가 있다. 본 연구는 예술시장 유통 분야에 대한 빅데이터 수집과 정형·비구조적 데이터 분석을 통해 객관적이고 신뢰할 수 있는 미술품 유통 현황을 파악한다. 이를 통해 현재 시장에서 저자의 분석을 객관적으로 제공할 수 있는 시스템을 구현하고자 한다. 본 연구에서는 미술품 유통 사이트에서 저자 정보를 수집하고 일간지 매일경제에서 저자의 기사를 수집·분석해 작가별 연관 단어의 빈도를 산출했다. 이를 통해 본 연구에서는 소비자에게 객관적이고 신뢰할 수 있는 정보를 제공하는 것을 목표로 한다.

Neighbor Cooperation Based In-Network Caching for Content-Centric Networking

  • Luo, Xi;An, Ying
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제11권5호
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    • pp.2398-2415
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    • 2017
  • Content-Centric Networking (CCN) is a new Internet architecture with routing and caching centered on contents. Through its receiver-driven and connectionless communication model, CCN natively supports the seamless mobility of nodes and scalable content acquisition. In-network caching is one of the core technologies in CCN, and the research of efficient caching scheme becomes increasingly attractive. To address the problem of unbalanced cache load distribution in some existing caching strategies, this paper presents a neighbor cooperation based in-network caching scheme. In this scheme, the node with the highest betweenness centrality in the content delivery path is selected as the central caching node and the area of its ego network is selected as the caching area. When the caching node has no sufficient resource, part of its cached contents will be picked out and transferred to the appropriate neighbor by comprehensively considering the factors, such as available node cache, cache replacement rate and link stability between nodes. Simulation results show that our scheme can effectively enhance the utilization of cache resources and improve cache hit rate and average access cost.

Research on the Polarization Effects of the Shandong Processing Trade and Strategy to Coordinate Its Development

  • Xiao, Dan Dan
    • Asian Journal of Business Environment
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    • 제3권2호
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    • pp.17-22
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    • 2013
  • Purpose - This dissertation is based on previous research, and analyzes processing trade, which constitutes a major section of foreign trade in Shandong Province. Research design, data, and methodology - The study uses the survey data on polarization, which is a vital index reflecting the unbalanced growth of regional economic development. The article introduces the processing trade polarization index, and the processing trade polarization fluctuation rate, to predict the geographical polarization posture and development trends in Shandong Province. Results -The development of processing trade in Shandong Province shows the level of gradient from east to west. The first-line growth pole has been formed and developed, and the initial formation of the diffusion mechanism has taken place. However, coordination problems in accompanying regional development have become increasingly prominent. Conclusions - This study focuses on the development of processing trade strategy and suggests overall coordination of development objectives, using non-balanced development goals. According to regional characteristics and development objectives of the processing trade in Shandong Province, the region around the city is divided into innovation diffusion region, enhanced growth areas, areas expected to undertake development, and areas to upgrade in four levels, given the different policy proposals.

Factors Affecting Real Earning Management: Evidence from Indonesia Stock Exchange

  • SIAHAYA, Septina Louisa;SANDANAFU, Sally Paulina;APONNO, Chrestiana;SADUBBUN, Vury Lilian Angela
    • The Journal of Asian Finance, Economics and Business
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    • 제8권8호
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    • pp.85-91
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    • 2021
  • This research aims to analyze the impact of Financial Risk (FR), Information Asymmetric (IA), and Earning Power (EP) on Real Earning Management (REM) of listed trading companies in IDX Indonesia. This study aims to analyze the influence of FR, IA, EP, on REM through Operating Cash Flow, Production expense, and Discretionary Expense. The study employs an unbalanced panel of data set from 2014 to 2018 on the activity of all trading companies (15 in total) as selected samples of 48 feasible samples from 144 existing data. The sample used a non probability sampling method with a purposive sampling technique. This research was classified as causative and tested by multiple linear regression model with cross-sectional analysis. The result indicated a significant impact of FR on REM through PROD and DISX but not through COF. How ever, IA, and EP showed significant impact on REM by means of COF but not go by PROD and DISX..The findings in this study contribute to the users of financial reports particularly the stakeholders in defining the determinants of real earning management practices among firms when it comes to decision making.

고차원 데이타 패킹을 위한 주기적 편중 분할 방법 (A Cyclic Sliced Partitioning Method for Packing High-dimensional Data)

  • 김태완;이기준
    • 한국정보과학회논문지:데이타베이스
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    • 제31권2호
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    • pp.122-131
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    • 2004
  • 이전의 연구들에서 제안된 많은 색인 방법들은 저차원과 동적인 환경을 가정하고 제안되었다. 그러나 최근의 많은 데이타베이스 응용분야들은 대용량, 고차원 그리고 정적인 환경에 대한 처리를 요구하고 있다. 따라서 기존의 저차원이고 동적인 환경에서 제안되었던 색인 구축 전략들은 특히 데이타 및 공간 분할에 있어서 새로운 환경에 잘 적응하지 못한다. 본 연구에서 우리는 이러한 사실들을 지적하였고, 새로운 환경에 적응하는 색인 구축 시 적용되는 새로운 분할 전략을 성능 모델에 근거하여 제안하였다. 우리의 접근 방법은 기본적으로 정적인 환경에서 색인 구축에 사용되는 패킹이라는 기법을 적용하였다. 그리고 고차원 환경에서 질의 성능의 기대 값을 제시하는 민코프스키-합 비용모델에 대한 관찰 결과를 이용하였다. 이러한 것들에 바탕을 두어 우리는 데이타 및 공간을 균등하게 분할하는 것보다 불균등하게 분할하는 것이 좋을 것이라는 예측을 비용 모델에 대한 관찰 결과로써 도출하였다. 그리고 이러한 결과를 이용한 불균등 분할 방법과 성능 모델들을 제시하였다. 이 연구의 결론으로서 균등 분할 방법보다 불균등 분할 방법이 고차원 환경에서 더 효율적인 방법임을 성능 모델 및 실험을 통하여 보여주었다. 그리고, 어떻게 불균등하게 분할하는 것이 좋은지에 대한 명확한 계량적 기준들을 제시하였다.

다이나믹 펨토셀 네트워크에서 커버리지와 데이터 부하 균형을 고려한 기지국의 파워 조절 분산 알고리즘 (A Distributed Power Control Algorithm for Data Load Balancing with Coverage in Dynamic Femtocell Networks)

  • 신동훈;최성희
    • 정보과학회 컴퓨팅의 실제 논문지
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    • 제22권2호
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    • pp.101-106
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    • 2016
  • 셀룰러 시스템을 기반으로 하는 펨토셀 네트워크는 실내 환경에서 대용량 데이터 전송을 위한 기술로 주목 받고 있다. 본 연구에서는 다수의 펨토 기지국을 배치하여 서비스를 제공하는 실내 환경에서 커버리지 문제와 데이터 전송 부하 문제를 동시에 고려하는 기지국의 파워 조절 분산 방법을 제안한다. 사용자의 데이터 사용량은 시간과 장소에 따라 지속적으로 변화하기 때문에 기지국의 데이터 전송 부하를 효과적으로 분배하는 동적 파워 조절 방법이 요구된다. 또한, 대규모 시설에 설치되어 있는 펨토셀 네트워크 시스템을 효율적으로 운영하기 위해서는 기지국의 파워 조절을 위한 분산 알고리즘이 필요하다. 본 논문에서는 기지국 사이의 데이터 전송 부하를 효과적으로 분배하는 분산 알고리즘을 제시한다. 또한, 일부 기지국에서 발행한 장애를 대응하는 방법과 새로운 기지국을 추가하는 방법을 제시한다. 모의 실험을 통해서 제안한 알고리즘의 성능을 시험하였다.

How Do the Banks Determine Regulatory Capital, Risk, and Cost Inefficiency in Bangladesh?

  • RAHMAN, Mohammad Morshedur;CHOWDHURY, Md. Ali Arshad;MOUDUD-UL-HUQ, Syed
    • The Journal of Asian Finance, Economics and Business
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    • 제7권12호
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    • pp.211-222
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    • 2020
  • This study examines simultaneous relationships between regulatory capital, risk, and cost-inefficiency for a sample of 30 commercial banks in Bangladesh from 2006 to 2018. To conduct the analysis, we used the Generalized Methods of Moments (GMM) in an unbalanced panel data framework. The empirical results show that there is a negative and significant relationship between capital regulation and credit, and overall risk. It is also evident from the results that the capital adequacy ratio is positively and significantly related to default risk and liquidity risk. Therefore, higher capitalized banks take an effort to prevent more credit risk and promote financial stability by reducing liquidity risk. Results also report that banks have been characterized as inefficient, less capitalized, and high risk. On the other hand, efficient banks are more stable but have a high level of liquidity risk. Besides, from the size of the bank, large banks are defined as having lower regulatory capital, are more risk seekers but stable with higher cost-efficiency. Notably, higher capitalized banks are more profitable and cost-efficient by reducing risk. Finally, this study also provides some insightful policy suggestions to the stakeholders.

CEO Compensation and Unobserved Firm Performance in Pakistan

  • SHEIKH, Muhammad Fayyaz;BHUTTA, Aamir Inam;SULTAN, Jahanzaib
    • The Journal of Asian Finance, Economics and Business
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    • 제6권3호
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    • pp.305-313
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    • 2019
  • The study examines whether higher CEO compensation is related to unobserved future firm performance in an emerging market, Pakistan. Further, it extends its scope to analyzing the impact of group affiliation and ownership concentration on the relationship between CEO compensation and future firm performance. The study uses an unbalanced panel data consisting of 1508 firm-year observations from 225 non-financial listed companies in Pakistan Stock Exchange (PSX) for period 2005 to 2012. The multiple regression models adjusted to heteroskedasticity and autocorrelation in error terms are used. The study finds that, in general, CEO compensation is positively associated with future operating performance. However, higher CEO compensation leads to lower operating performance in firms that have lower ownership concentration and are affiliated with business groups. When firms are not affiliated with any group and have high ownership concentration, the relationship between excessive CEO compensation and future operating performance becomes insignificant. Given that efficient compensation packages may lead to long term value creation to shareholders and reduce agency problems, this study highlights an important moderating role of ownership concentration and group affiliation of the firms in emerging markets.

편시력저하요인에 관한 한의학적 임상고찰 (Clinical Study on Predisposing Factors of Visual Acuity Decrease in the View of Oriental Medicine)

  • 우영민;남영
    • 한방안이비인후피부과학회지
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    • 제15권2호
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    • pp.200-209
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    • 2002
  • Visual acuity Decrease is one of the most common symptoms of adolescents. Acupuncture method has been used for improvement of visual acuity from ancient period. But it is not sufficent to recognize underlying causes and predisposing factors of visual acuity decrease. So we investigate the common causes and factors on myopia outpatients group. We researched 992 outpatients who were treated at Department of Acupuncture & Moxibustion, National Medical Center from June 2001 to May 2002. The outpatients were classified into several groups according to visual acuity and age. Common predisposing factors of visual acuity decrease were assessed through questionnaires based on the Classics of the traditional oriental medical bibliography. The results are as follows; age distribution is 52.9$\%$ for female, 47.1$\%$ for male. The predisposing factors were ranked as poor posture(66.9$\%$), unbalanced diet(57.2$\%$), heredity(53.8$\%$), irregular diet habit(51.3$\%$) and so on. These results playa role as preliminary data in recongnition of myopia in the view of oriental medicine.

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