• Title/Summary/Keyword: power normalization

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THE CONVERGENCE RATES IN THE ASYMMETRIC LAWS OF LARGE NUMBER FOR NEGATIVELY ASSOCIATED RANDOM FIELDS

  • Ko, Mi-Hwa
    • Honam Mathematical Journal
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    • v.34 no.2
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    • pp.209-217
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    • 2012
  • Convergence rates in the law of large numbers for i.i.d. random variables have been generalized by Gut[Gut, A., 1978. Marc inkiewicz laws and convergence rates in the law of large numbers for random variables with multidimensional indices, Ann. Probab. 6, 469-482] to random fields with all indices having the same power in the normalization. In this paper we generalize these convergence rates to the identically distributed and negatively associated random fields with different indices having different power in the normalization.

Power performance Testing of Small Wind Turbine Generator System (소형 풍력발전시스템의 출력성능검사)

  • Kim, Hyeon-Ki;Kim, Byeong-Min;Yoo, Neung-Soo
    • Journal of Industrial Technology
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    • v.31 no.A
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    • pp.123-128
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    • 2011
  • In this study, procedures, a power performance testing system of Wind Turbine System Research Center of Kangwon National University is introduced. Test prodedures and results are presented on a stand-alone vertical-axis 200W wind turbine manufactured by Geum-Poong Energy Inc.. Power performance test is performed according to IEC standard. The test results are compared with the power performance standard. Also, the effects of normalization and disturbed sectors are considered.

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A Study on the Negotiation on Management Normalization of GM Korea through the Two-Level Games (양면게임 이론으로 분석한 한국GM 경영정상화 협상연구)

  • Lee, Ji-Seok
    • Korea Trade Review
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    • v.44 no.1
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    • pp.31-44
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    • 2019
  • This study examines the normalization of Korean GM management between the Korean government and GM in terms of external negotiation game and internal negotiation game using Putnam's Two-Level Games. In addition, GM's Win-set change and negotiation strategy were analyzed. This analysis suggested implications for the optimal negotiation strategy for mutual cooperation between multinational corporations and local governments in the global business environment. First, the negotiation strategy for Korea's normalization of GM management in Korea can be shifted to both the concession theory and the opposition theory depending on the situation change and the government policy centered on the cautious theory. Second, GM will maximize its bargaining power through 'brink-end tactics' by utilizing the fact that the labor market is stabilized, which is the biggest weakness of the Korean government, while maintaining a typical Win-set reduction strategy. GM will be able to restructure at any time in terms of global management strategy, and if the financial support of the Korean government is provided, it will maintain the local factory but withdraw the local plant at the moment of stopping the support. In negotiations on the normalization of GM management in Korea, it is necessary to prepare a problem and countermeasures for various scenarios and to maintain a balance so that the policy does not deviate to any one side.

Annual Yearly Load Forecasting by Using Seasonal Load Characteristics With Considering Weekly Normalization (주단위 정규화를 통하여 계절별 부하특성을 고려한 연간 전력수요예측)

  • Cha, Jun-Min;Yoon, Kyoung-Ha;Ku, Bon-Hui
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.199-200
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    • 2011
  • Load forecasting is very important for power system analysis and planning. This paper suggests yearly load forecasting of considering weekly normalization and seasonal load characteristics. Each weekly peak load is normalized and the average value is calculated. The new hourly peak load is seasonally collected. This method was used for yearly load forecasting. The results of the actual data and forecast data were calculated error rate by comparing.

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Comparison of the Dynamic Time Warping Algorithm for Spoken Korean Isolated Digits Recognition (한국어 단독 숫자음 인식을 위한 DTW 알고리즘의 비교)

  • 홍진우;김순협
    • The Journal of the Acoustical Society of Korea
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    • v.3 no.1
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    • pp.25-35
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    • 1984
  • This paper analysis the Dynamic Time Warping algorithms for time normalization of speech pattern and discusses the Dynamic Programming algorithm for spoken Korean isolated digits recognition. In the DP matching, feature vectors of the reference and test pattern are consisted of first three formant frequencies extracted by power spectrum density estimation algorithm of the ARMA model. The major differences in the various DTW algorithms include the global path constrains, the local continuity constraints on the path, and the distance weighting/normalization used to give the overall minimum distance. The performance criterias to evaluate these DP algorithms are memory requirement, speed of implementation, and recognition accuracy.

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Transmission Signal Normalization Scheme for Advanced Terrestrial Digital Multimedia Broadcasting (AT-DMB 전송 신호 정규화 방안)

  • Lee, Sang-Woon;Kim, Young-Su;Yun, Jeong-Song
    • Journal of Broadcast Engineering
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    • v.15 no.6
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    • pp.868-875
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    • 2010
  • AT-DMB was developed to raise the transmission rate of existing T-DMB with backward compatability. The transmission and hierarchical video service technique were legislated as Korean TTA standards, and other application service techniques including data services are being developed for the commercial service. In this paper, we consider the power of transmission power level of signals in Advanced Terrestrial Digital Multimedia System according to the constellation ratio. And we propose a new scheme for normalization of transmission signal power level in AT-DMB system. Adopting this scheme, the signal power level of hierarchical modulated signal can be uniform in AT-DMB system both for B Mode and Q Mode.

Derivation of Design Low Flows by Transformation Method

  • 이순혁;명성진
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.37 no.E
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    • pp.1-9
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    • 1995
  • It is shown that two step power transformation is more efficient for the normalization of frequency distribution with the coefficient of skewness of zero in comparison with others including SMEMAX and power transformations. It is confirmed that the design low flows calculated using power and two step power transformations used in this study are generally nearer to the observed data as compared with those of SMEMAX transformation at all return periods in the applied watersheds of the Kum, Naktong and Yongsan rivers in Korea.

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Step Size Normalization for Maximum Cross-Correntropy Algorithms (최대 상호코렌트로피 알고리듬을 위한 스텝사이즈 정규화)

  • Kim, Namyong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.41 no.9
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    • pp.995-1000
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    • 2016
  • The maximum cross-correntropy (MCC) algorithm with a set of random symbols keeps its optimum weights undisturbed from impulsive noise unlike MSE-based algorithms and its main factor has been known to be the input magnitude controller (IMC) that adjusts the input intensity according to error power. In this paper, a normalization of the step size of the MCC algorithm by the power of IMC output is proposed. The IMC output power is tracked recursively through a single-pole low-pass filter. In the simulation under impulsive noise with two different multipath channels, the steady state MSE and convergence speed of the proposed algorithm is found to be enhanced by about 1 dB and 500 samples, respectively, compared to the conventional MCC algorithm.

Global Environmental Impacts Assessment of Power Generation Technologies with LCA Method (LCA를 통한 국내 발전기술의 글로벌 환경성 평가)

  • Chung Whan-Sam;Kim Seong-Ho;Kim Tae-Woon
    • Journal of Energy Engineering
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    • v.14 no.2 s.42
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    • pp.140-146
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    • 2005
  • In this study, a quantitative environmental impacts assessment was performed for various power technologies with a lift cycle assessment (LCA) method. The LCA is regarded as a useful tool far analyzing diverse environmental impacts at a local, regional, and global aspect. The investigated power plants such as nuclear, coal, and LNC power systems were selected because they took share over $90\%$ of domestic elec-tricity supply in Korea. Furthermore, a wind power technology was included as a representative energy source out of Korean renewable energy systems. According to the three geological aspects, environmental impacts had been categorized into eight types. For these impact categories, characterization had been carried out for comparing environmental burdens of power systems under consideration. Then, normalization had been done in order to gain a better understanding of the relative size among impact categories.

Generation of Daily Load Curves for Performance Improvement of Power System Peak-Shaving (전력계통 Peak-Shaving 성능향상을 위한 1일 부하곡선 생성)

  • Son, Subin;Song, Hwachang
    • Journal of the Korean Institute of Intelligent Systems
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    • v.24 no.2
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    • pp.141-146
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    • 2014
  • This paper suggests a way of generating one-day load curves for performance improvement of peak shaving in a power system. This Peak Shaving algorithm is a long-term scheduling algorithm of PMS (Power Management System) for BESS (Battery Energy Storage System). The main purpose of a PMS is to manage the input and output power from battery modules placed in a power system. Generally, when a Peak Shaving algorithm is used, a difference occurs between predict load curves and real load curves. This paper suggests a way of minimizing the difference by making predict load curves that consider weekly normalization and seasonal load characteristics for smooth energy charging and discharging.