• 제목/요약/키워드: Distributed Data Analysis

검색결과 2,340건 처리시간 0.032초

Impact of Globalization on Coal Consumption in Vietnam: An Empirical Analysis

  • NGUYEN, Thi Cam Van;LE, Quoc Hoi
    • The Journal of Asian Finance, Economics and Business
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    • 제7권6호
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    • pp.185-195
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    • 2020
  • The study investigates the impact of globalization on coal consumption in Vietnam. This study employs an autoregressed distributed lag approach on time series data for the period of 1990 to 2017. The study tests the stationary, cointegration of time series data and utilizes autoregressed distributed lag modeling technique to determine the short-run and long-run relationship among coal consumption, globalization, income, population, and CO2 emissions. The results show that globalization increases coal consumption in Vietnam in the long run. The results also show that rapid economic growth promotes more coal consumption in the short run as well as in the long run. Moreover, higher population reduces coal consumption, and CO2 emissions decrease coal consumption both in the short run and the long run. The findings of the study suggest that globalization increases coal consumption in Vietnam in the long run. This result suggests that the increase in globalization level in Vietnam increases coal consumption. An interesting finding is that higher population reduces coal consumption, and population is an important factor towards the lessening in coal consumption. The findings confirm that environmental pollution decreases coal consumption in the short run and the long run. This implies that coal consumption may be green consumption in Vietnam.

Morphological and molecular identification of Alaria paradisea (Phaeophyceae, Laminariales) from the Kurile Islands

  • Klimova, Anna V.;Klochkova, Nina G.;Klochkova, Tatyana A.;Kim, Gwang Hoon
    • ALGAE
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    • 제33권1호
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    • pp.37-48
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    • 2018
  • Alaria is the second largest genus of the Laminariales, which is distributed far into the northern Pacific and Atlantic oceans. Due to its high morphological plasticity, over 100 specific and sub-specific names have been used in Alaria, this has been tailored down to the present 17 species through morphological revision and molecular phylogenetic analysis. Endemic species of Alaria from Russian Far East have not been thoroughly revised since their original description, and few of them were confirmed using molecular data until recently. We carried out morphological and molecular studies on A. paradisea which is an endemic species distributed on the Kurile Islands, first described by Miyabe and Nagai in 1932 as Pleuropterum paradiseum. The range of morphological variability and its distribution was re-evaluated using the type specimen as well as other specimens. Analyses of partial mitochondrial cytochrome c oxidase subunit 1 and nuclear-encoded internal transcribed spacer sequences showed that A. paradisea nested within the genus Alaria, but differs morphologically from any other Alaria species in having additional sporophylls with a central midrib (${\beta}-sporophylls$). Our results showed that A. paradisea clearly belongs to the genus Alaria based on DNA data, although the key morphological character that was used to include this species to the genus Pleuropterum, ${\beta}-sporophylls$, is stable and distinguishes it from other Alaria species.

Determinant Factors' Impact on Managerial Performance through Management Accounting Systems in Indonesia

  • FUADAH, Luk Luk;SAFITRI, Rika Henda;YULIANI, Yuliani;ARISMAN, Anton
    • The Journal of Asian Finance, Economics and Business
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    • 제7권10호
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    • pp.109-117
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    • 2020
  • This study aims to examine the effects of factors related to management accounting systems and managerial performance. The factors include budgetary participation, decentralization, and management style. Furthermore, this research investigates the consequences of the management accounting systems on managerial performance and the direct effect between management style and budgetary participation on managerial performance. Survey questionnaires were distributed to both public and private hospitals in Palembang, the South Sumatera region, Indonesia. The sample consisted of 62 respondents from 15 hospitals Target respondents were all managers in hospitals, including financial managers, service managers, human resource managers, quality managers, and other managers. The questionnaire was distributed online to each hospital, and approximately five or more questionnaires were hardcopies. This research was conducted over less than six months. The data obtained were processed via excel files, then checked for conformity, and analyzed by partial least square (PLS) software with descriptive statistics. This study uses path analysis, which that is structural equation modeling (SEM). The findings show that management style, decentralization, and budgetary participation significantly affect management accounting systems. However, management style and budgetary participation did not influence managerial performance. Finally, the findings indicate that management accounting systems are positively affected by managerial performance.

Predicting Arab Consumers' Preferences on the Korean Contents Distribution

  • Park, Young-Eun;Chaffar, Soumaya;Kim, Myoung-Sook;Ko, Hye-Young
    • 유통과학연구
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    • 제15권4호
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    • pp.33-40
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    • 2017
  • Purpose - This study aims to examine the analysis of pattern on Arab countries consumers' preferences of the Korean Contents using social media, Facebook since Korean entertainment contents have been distributed in the global marketplace. Then we focus on developing Predictive model using a Data Mining Technique. Research design, data and methodology - In order to understand preference growth of Korean contents in Arabic countries, we- collected data from two popular Facebook pages: 'Korean movies and drama' and 'K-pop'. Then, we adopted a data-driven approach based on Data Mining techniques. Results - It is obvious that the number of likes for K-pop will increase for all North African and Middle Eastern countries, however concerning Korean Movies and Drama except Tunisia it is decreasing for Algeria, Egypt and Morocco. Also, concerning Saudi Arabia and United Arab Emirates, the number of likes will decrease for Korean Movies and Drama which is not the case for Iraq. Conclusions - It is noted in this study that K-contents such as drama, movie and music are sometimes a gateway to a wider interest in Korean culture, food and brands. Moreover, this study gives significant implications for developing predictive model to forecast Korean contents' consumption and preferences.

서울지역 지하수시스템의 수문지질학적 특성 분석을 위한 지리정보시스템의 활용 (GIS Application to Urban Hydrogeological Analysis of Groundwater System in Seoul Area)

  • 김윤영;이강근
    • Spatial Information Research
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    • 제7권1호
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    • pp.103-117
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    • 1999
  • 도시지역에서 지하수 산출특성, 흐름 및 오염현상은 인위적인 양수, 지하구조물, 다양한 오염원 지면 포장으로 인한 지하수 함양의 국지적 변동 등의 영향을 받는 매우 복잡한 특성을 가진다. 서울지역 지하수시스템을 분석하기 위해 지리정보시스템 환경에서 수문지질학적 데이터베이스를 구축하였다. 지하수 수위변화의 주요인은 한강수계, 지하철 지형, 강우 등이고 이들을 이용하여 지하수시스템에 대한 영향을 분석하였다. 그리고 그 자료와 분석결과를 ARC/INFO에 데이터 베이스로 저장하고 실세계의 현상과 비구 분석하였다. 구축된 내용은 지하수 오염원의 분포, 대수층의 수리상수, 한강수위 변화에 대한 지하수 영향간 지하철 역사의 대규모 양수로 인한 지하수시스템의 변화 둥이다. 자료의 특성에 맞는 자료 형태로 저장하고 표현할 수 있도록 하였다.

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비정상 트래픽 분석을 위한 네트워크 모니터링 기반의 네트워크 성능 분석 시스템 (A Network Performance Analysis System based on Network Monitoring for Analyzing Abnormal Traffic)

  • 김시홍;구자환;김승해;최장원;안성진
    • 융합보안논문지
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    • 제4권3호
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    • pp.1-8
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    • 2004
  • Computational Grid나 Data Grid와 같은 대규모 분산 시스템은 장애 탐지, 성능 측정, 성능튜닝, 성능 예측, 스케줄링, 보안 분석 등의 작업을 위해 많은 량의 모니터링 데이터를 필요로 한다. 네트워크 특성을 나타내는 지표들은 네트워크 모니터링 시스템을 통해 얻어질 수 있으며 시스템에 의해 축적된 자료는 상기한 작업의 정확한 분석을 돕는다. 본 논문에서는 네트워크 모니터링 시스템의 한 형태로 네트워크 모니터링기반의 네트워크 성능 및 보안 분석 시스템을 소개한다. 본 시스템은 이용자 중심으로 네트워크 성능 및 보안 데이터를 제공하며, 이용자가 원격지의 네트워크 특성을 측정 환경에 따라 변화해 가며 측정할 수 있게 함으로써 해당 원격지의 네트워크 서비스를 가늠해 볼 수 있게 한다.

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The Effects of Personality Factors of the Prep Entrepreneurs in Food Service Industry on Entrepreneurial Intention: Focusing on the Risk Sensitivity

  • Park, Cheol-Woo;Bae, Gumkwang
    • 한국조리학회지
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    • 제23권6호
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    • pp.118-126
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    • 2017
  • The purposes of this study were to estimate the relationship between Big 5 personality factors of prep-entrepreneur and entrepreneurial intention, and to identify the moderating effects of risk sensitivity on the relationship. There is a total of 181 questionnaire surveys distributed and 152 data were used for analysis with erasing incomplete responses. The data analysis was conducted to utilize frequency analysis and regression analysis with SPSS WIN 22.0. The results of this study demonstrated that there are only 2 factors, neuroticism and extraversion, significantly influence on entrepreneurial intention, while conscientiousness, agreeableness and openness to experience do not have significant impacts on entrepreneurial intention. Furthermore, risk sensitivity effects on the relationship between Big-5 personality factor and entrepreneurial intention. This study may contribute to help prep-entrepreneur by using baseline data. Prep- entrepreneur could know their personality factor and confirm their consideration about entrepreneurial intention. Meanwhile, for the market-oriented implication, this study suggested that it is instrumental and significant for knowing prep-entrepreneur's personality factor and their entrepreneurial intention before starting foodservice business.

유체력을 고려한 3차원 수중압력선체의 진동특성에 관한 연구 (A Study on the Vibration of Characteristics of 3-Dimension Submerged Vehicle in Consideration of Fluid-Structure Interaction)

  • 손충렬;황인하;이강수
    • 한국해양공학회:학술대회논문집
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    • 한국해양공학회 2000년도 춘계학술대회 논문집
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    • pp.81-88
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    • 2000
  • Unlike structures in the air, the vibration analysis of a submerged or floating structure such as offshore structures or ships is possible only when the fluid-structure interaction is understood, as the whole or part of the structure is in contact with water. Specially, the importance of the added mass is not necessary to say like the submerged vehicle, all of the hull body, is positioned in the water. This paper introduce two method to find natural frequency in consideration of fluid-structure modal coupled vibration analysis. The purpose of this study is to analyze of the vibration characteristic of submerged vehicle to obtain the anti-vibration design data, which could be used in the preliminary design stage data. Underwater pressure hull of submerged vehicle is used as the model of this study. The F.E.M model is meshed by shell and beam element. Also, considering of the inner hull weight, mass element is distributed in the direction of hull length. Numerical calculations are accomplished using the commercial B.E.M code. The characteristics of natural frequency(eigenvalues), mode shape(eigenvectors) and frequency-displacement response are analyzed. The results of this study will be used as the useful design data in preliminary anti-vibration design stage.

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탐진강 수질측정 지점 간 동질성 검정을 위한 비모수적 자료 분석 (A Non-parametric Analysis of the Tam-Jin River : Data Homogeneity between Monitoring Stations)

  • 김미아;이수웅;이재관;이정섭
    • 한국물환경학회지
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    • 제21권6호
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    • pp.651-658
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    • 2005
  • The Non-parametric Analysis is powerful in data test especially for the non- normality water quality data. The data at three monitoring stations of the Tam-Jin River were evaluated for their normality using Skewness, Q-Q plot and Shapiro-Willks tests. Various constituent of water quality data including temperature, pH, DO, SS, BOD, COD, TN and TP in the period of January 1994 to December 2004 were used as dataset. Shapiro-Willks normality test was carried out for a test 5% significance level. Most water quality data except DO at monitoring stations 1 and 2 showed that data does not normally distributed. It is indicating that non-parametric method must be used for a water quality data. Therefore, a homogeneity was conducted by Mann-Whitney U test (p<0.05). Two stations were paired in three pairs of such stations. Differences between stations 1, 2 and stations 1, 3 for pH, BOD, COD, TN and TP were meaningful, but Tam-Jin 2 and 3 stations did not meaningful. In addition, a narrow gap of the water quality ranges is not a difference. Categories in which all three pairs of stations (1 and 2, 2 and 3, 1 and 3) in the Tam-Jin River showed difference in water quality were analyzed on TN and TP. The results of in this research suggest a right analysis in the homogeneity test of water quality data and a reasonable management of pollutant sources.

디저트 카페의 브랜드 가치와 브랜드 충성도 관계에 브랜드 신뢰의 매개효과 (The Mediating Effect of Brand Trust on the Relationship between Brand Value and Brand Loyalty in the Dessert Cafes)

  • 권기완;최익준;김경은
    • 한국조리학회지
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    • 제23권5호
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    • pp.48-57
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    • 2017
  • This study aims to analyze the relationships among brand value, brand trust, and brand loyalty of dessert cafes and to verify the mediating effect of brand trust in the relationship between brand value and loyalty. This study targeted eight dessert cafes located in Seoul, and a survey with customers aged 20 or over was conducted over 11 days from April 10th to 21th, 2017. A total of 230 self-administered questionnaires were distributed, and 205 questionnaires (89.13%) were included for the data analysis after the exclusion of 25 incomplete and unreliable responses. Every data used for analysis went through frequency analysis, reliability test, exploratory factor analysis, simple regression analysis, multiple regression analysis, mediator effect analysis, and Sobel test using the SPSS 18.0 analysis program. The study results revealed that brand value had a significant positive relationship to brand trust, and brand trust had a significant positive relationship to brand loyalty. Also, brand value had a significant positive relationship to brand loyalty, and brand trust mediated the relationship between brand value and loyalty. Based on these findings, the discussion to enhance brand loyalty of dessert cafes were suggested.