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Your search keyword '"partition point"' showing total 14 results
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14 results on '"partition point"'

1. Stability analysis of two-terminal HVDC transmission systems using SISO open-loop gains

Author

Shangning Tan, Junliang Liu, Xiong Du, Hongjun Yang, and Yuelong Cao

Subjects
phase margin, stability analysis, port model, parameter design, partition point, General Works
Abstract

The ports of a three-phase voltage source converter have multiple frequency electrical parameters, which makes HVDC systems with these converters present multiple input multiple output (MIMO) characteristics. The generalized Nyquist criterion of the MIMO model is often used to analyze the system stability. However, this model is more difficult to obtain than the single-input single-output (SISO) model, and the stability margin and the oscillation frequency band are difficult to capture. To solve these problems, this paper took the two-terminal HVDC transmission system as the research object to derive a SISO model that can be measured by a port. Moreover, this study also proposed a method for analyzing the system stability through envelope SISO open-loop gains. Finally, the key port and parameters affecting the system stability were analyzed according to the stability margin, which provided theoretical support for the design of the system parameters. The established model and the proposed analysis method were verified in a MATLAB/Simulink simulation model.

Published
2023
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2. Individual electrical conductivity test for the assessment of soybean seed germination

Author

Nilson Matheus Mattioni, Liliane Marcia Mertz, Ana Paula Piccinin Barbieri, Fernando Machado Haesbaert, Willian Giordani, and Sidinei José Lopes

Subjects
Glycine max (L.) Merrill, Partition point, Fast test, Seed quality, Agriculture (General), S1-972
Abstract

Soybean seed quality is affected by many factors, which may occur during the production, processing, and storage phases. To ensure the quality of seeds, the adoption of fast and efficient methods to estimate seed viability in quality control programs is important. This study aimed to determine a partition point of the individual electrical conductivity test to predict soybean seed germination. Three lots each of five different soybean cultivars (Fundacep 57 RR, BMX Potência RR, BMX Força RR, BMX Turbo RR, and Nidera 7321 RG) were used. Seed quality was assessed through the mass of 1,000 seeds (MTS), moisture content (MC), germination test (G), bulk electrical conductivity (BEC), individual electrical conductivity (IEC), accelerated ageing (AA), and field seedling emergence (FSE). To determine a partition point in the IEC test for predicting germination, seeds were subjected to the germination test in the same position used for the IEC test. The accuracy of the partition point was tested by comparing predicted germination with the standard germination test. The partition point obtained for normal seeds was 130 ?S .cm-1.seed-1. The IEC test, however, had limitations in predicting soybean seed germination. The data for predicted germination were different from those obtained by the standard test, because the characteristics of each lot led to differences in the electrical conductivity values.

Published
2015
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4. A New Family of String Classifiers Based on Local Relatedness

Author

Higa, Yasuto, Inenaga, Shunsuke, Bannai, Hideo, Takeda, Masayuki, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Carbonell, Jaime G., editor, Siekmann, Jörg, editor, Todorovski, Ljupčo, editor, Lavrač, Nada, editor, and Jantke, Klaus P., editor

Published
2006
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5. A Study of Accessible Motifs and RNA Folding Complexity

Author

Wexler, Ydo, Zilberstein, Chaya, Ziv-Ukelson, Michal, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Istrail, Sorin, editor, Pevzner, Pavel, editor, Waterman, Michael, editor, Apostolico, Alberto, editor, Guerra, Concettina, editor, and Pevzner, Pavel A., editor

Published
2006
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6. Parallel Hierarchical Data Cube for Range Sum Queries and Dynamic Updates

Author

Li, Jianzhong, Gao, Hong, Hutchison, David, editor, Kanade, Takeo, editor, Kittler, Josef, editor, Kleinberg, Jon M., editor, Mattern, Friedemann, editor, Mitchell, John C., editor, Naor, Moni, editor, Nierstrasz, Oscar, editor, Pandu Rangan, C., editor, Steffen, Bernhard, editor, Sudan, Madhu, editor, Terzopoulos, Demetri, editor, Tygar, Dough, editor, Vardi, Moshe Y., editor, Weikum, Gerhard, editor, Galindo, Fernando, editor, Takizawa, Makoto, editor, and Traunmüller, Roland, editor

Published
2004
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11. Coordinate generation with precise controls

Author

Eiseman, Peter R., Ehlers, J., editor, Hepp, K., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Zittartz, J., editor, Beiglböck, W., editor, Reynolds, W. C., editor, and MacCormack, R. W., editor

Published
1981
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13. Individual electrical conductivity test for the assessment of soybean seed germination

Author

Sidinei José Lopes, Fernando Machado Haesbaert, Nilson Matheus Mattioni, Willian Giordani, Ana Paula Piccinin Barbieri, and Liliane Marcia Mertz

Subjects
Horticulture, Germination, Glycine max (L.) Merrill, Partition point, Fast test, Seed quality, food and beverages, lcsh:Agriculture (General), Biology, General Agricultural and Biological Sciences, lcsh:S1-972, Seed testing
Abstract

Soybean seed quality is affected by many factors, which may occur during the production, processing, and storage phases. To ensure the quality of seeds, the adoption of fast and efficient methods to estimate seed viability in quality control programs is important. This study aimed to determine a partition point of the individual electrical conductivity test to predict soybean seed germination. Three lots each of five different soybean cultivars (Fundacep 57 RR, BMX Potência RR, BMX Força RR, BMX Turbo RR, and Nidera 7321 RG) were used. Seed quality was assessed through the mass of 1,000 seeds (MTS), moisture content (MC), germination test (G), bulk electrical conductivity (BEC), individual electrical conductivity (IEC), accelerated ageing (AA), and field seedling emergence (FSE). To determine a partition point in the IEC test for predicting germination, seeds were subjected to the germination test in the same position used for the IEC test. The accuracy of the partition point was tested by comparing predicted germination with the standard germination test. The partition point obtained for normal seeds was 130 ?S .cm-1.seed-1. The IEC test, however, had limitations in predicting soybean seed germination. The data for predicted germination were different from those obtained by the standard test, because the characteristics of each lot led to differences in the electrical conductivity values.

Published
2015

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