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Artigos de revistas sobre o tema "Frequency"

Autor: Grafiati

Publicado: 4 de junho de 2021

Última modificação: 27 de julho de 2024

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1

Jarrah, Mu’tasem, e Naomie Salim. "Stock Market Prediction Based on Term Frequency-Inverse Document Frequency". Journal of Economics, Business and Management 4, n.º 3 (2016): 183–87. http://dx.doi.org/10.7763/joebm.2016.v4.388.

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2

Rana, Shilpesh C., Gaurang I. Joshi e Dr N. J. Shrimali Dr. N. J. Shrimali. "Flood Frequency Study For Kadana Reservoir Projectby Gumbel’s Frequency Distribution Method". Indian Journal of Applied Research 4, n.º 1 (1 de outubro de 2011): 213–16. http://dx.doi.org/10.15373/2249555x/jan2014/63.

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3

Chao Zhang, Chao Zhang, Dongning Sun Dongning Sun, Weilin Xie Weilin Xie, Zongyang Xia Zongyang Xia, Siwei Wang Siwei Wang, Hongxiao Shi Hongxiao Shi, Yitian Tong Yitian Tong, Yi Dong Yi Dong e Weisheng Hu Weisheng Hu. "Stable multi-frequency generator based on phase-locked optical frequency combs". Chinese Optics Letters 12, n.º 2 (2014): 020602–20605. http://dx.doi.org/10.3788/col201412.020602.

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4

MARIN, Bebe-Bucur, Adrian NĂSUI e Sebastian SPRINCEANĂ. "ASPECTS ABOUT FREQUENCY SYNTHESIZERS". SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE 18, n.º 1 (24 de junho de 2016): 273–80. http://dx.doi.org/10.19062/2247-3173.2016.18.1.37.

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5

Chen, Chaoyong, Chunqing Gao, Huixing Dai e Qing Wang. "Single-frequency Er:YAG ceramic pulsed laser with frequency stability close to 100 kHz". Chinese Optics Letters 20, n.º 4 (2022): 041402. http://dx.doi.org/10.3788/col202220.041402.

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6

Yukun Luo, Yukun Luo, Shuhua Yan Shuhua Yan, Aiai Jia Aiai Jia, Chunhua Wei Chunhua Wei, Zehuan Li Zehuan Li, Enlong Wang Enlong Wang e and Jun Yang and Jun Yang. "Revisiting the laser frequency locking method using acousto-optic frequency modulation transfer spectroscopy". Chinese Optics Letters 14, n.º 12 (2016): 121401–5. http://dx.doi.org/10.3788/col201614.121401.

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7

Zhou, Yuewen, Fangzheng Zhang e Shilong Pan. "Instantaneous frequency analysis of broadband LFM signals by photonics-assisted equivalent frequency sampling". Chinese Optics Letters 19, n.º 1 (2021): 013901. http://dx.doi.org/10.3788/col202119.013901.

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8

Bintrim, Sylvia J., e Timothy C. Berkelbach. "Full-frequency GW without frequency". Journal of Chemical Physics 154, n.º 4 (28 de janeiro de 2021): 041101. http://dx.doi.org/10.1063/5.0035141.

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9

Bauch, A., e H. R. Telle. "Frequency standards and frequency measurement". Reports on Progress in Physics 65, n.º 5 (15 de abril de 2002): 789–843. http://dx.doi.org/10.1088/0034-4885/65/5/203.

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10

Gans, T., J. Schulze, D. O’Connell, U. Czarnetzki, R. Faulkner, A. R. Ellingboe e M. M. Turner. "Frequency coupling in dual frequency capacitively coupled radio-frequency plasmas". Applied Physics Letters 89, n.º 26 (25 de dezembro de 2006): 261502. http://dx.doi.org/10.1063/1.2425044.

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11

Albittar, Ihsan F. I., e Hakan Dogan. "A frequency multiplier for reference frequency in frequency synthesizer systems". Analog Integrated Circuits and Signal Processing 94, n.º 1 (29 de novembro de 2017): 147–54. http://dx.doi.org/10.1007/s10470-017-1075-3.

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12

Kwang-Hoon Ko, Kwang-Hoon Ko, Kyung-Hyun Lee Kyung-Hyun Lee, Hyunmin Park Hyunmin Park, Jaemin Han Jaemin Han, Yong-Ho Cha Yong-Ho Cha, Gwon Lim Gwon Lim, Taek-Soo Kim Taek-Soo Kim e Do-Young Jeong Do-Young Jeong. "Frequency stabilization of the frequency doubled DOFA to the 127I2 line for calcium spectroscopy". Chinese Optics Letters 10, s2 (2012): S21903–321906. http://dx.doi.org/10.3788/col201210.s21903.

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13

Swift, P. G. F. "Frequency". Current Paediatrics 1, n.º 2 (junho de 1991): 96–97. http://dx.doi.org/10.1016/s0957-5839(06)80057-6.

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14

Kayahara, Takuro, e Takao Sato. "Frequency discrimination following linear frequency glide". Journal of the Acoustical Society of America 105, n.º 2 (fevereiro de 1999): 1152. http://dx.doi.org/10.1121/1.425480.

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15

COHEN, LEON. "Time-Frequency Spatial-Spatial Frequency Representations". Annals of the New York Academy of Sciences 808, n.º 1 Nonlinear Sig (janeiro de 1997): 97–115. http://dx.doi.org/10.1111/j.1749-6632.1997.tb51655.x.

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16

Sorrentino, T., O. Di Lorenzo, L. C. de Oliveira, M. Chevrollier e M. Oriá. "All-optical frequency-controlled frequency switch". Journal of the Optical Society of America B 27, n.º 7 (22 de junho de 2010): 1458. http://dx.doi.org/10.1364/josab.27.001458.

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17

Hinchberger, James L. "Billing Frequency and Meter Reading Frequency". Opflow 11, n.º 1 (janeiro de 1985): 3. http://dx.doi.org/10.1002/j.1551-8701.1985.tb00373.x.

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18

Xiang Jingfeng, 项静峰, 王利国 Wang Liguo, 任伟 Ren Wei, 李唐 Li Tang, 吕德胜 Lü Desheng e 刘亮 Liu Liang. "Frequency Noise Suppression of Single-Frequency Laser with Radio-Frequency Modulation". Chinese Journal of Lasers 44, n.º 5 (2017): 0501009. http://dx.doi.org/10.3788/cjl201744.0501009.

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19

Largo-Izquierdo, Pedro, e Pedro Martín-Mateos. "Frequency-tunable photonic frequency synthesis from an optical frequency comb reference". Optics Letters 42, n.º 19 (20 de setembro de 2017): 3777. http://dx.doi.org/10.1364/ol.42.003777.

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20

Kim, H. C., e J. K. Lee. "Dual radio-frequency discharges: Effective frequency concept and effective frequency transition". Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films 23, n.º 4 (julho de 2005): 651–57. http://dx.doi.org/10.1116/1.1931683.

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21

NECHIBVUTE, Action, Albert CHAWANDA, Nicholas TARUVINGA e Pearson LUHANGA. "Radio Frequency Energy Harvesting Sources". Acta Electrotechnica et Informatica 17, n.º 4 (1 de dezembro de 2017): 19–27. http://dx.doi.org/10.15546/aeei-2017-0030.

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22

Chang, Yawei, Tongxiao Jiang, Zhigang Zhang e Aimin Wang. "All-fiber Yb:fiber frequency comb". Chinese Optics Letters 17, n.º 5 (2019): 053201. http://dx.doi.org/10.3788/col201917.053201.

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23

Yang, Guang, Haosen Shi, Yuan Yao, Hongfu Yu, Yanyi Jiang, Albrecht Bartels e Longsheng Ma. "Long-term frequency-stabilized optical frequency comb based on a turnkey Ti:sapphire mode-locked laser". Chinese Optics Letters 19, n.º 12 (2021): 121405. http://dx.doi.org/10.3788/col202119.121405.

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24

Anqi Wang, Anqi Wang, Zhixin Meng Zhixin Meng e Yanying Feng Yanying Feng. "Widely tunable laser frequency offset locking to the atomic resonance line with frequency modulation spectroscopy". Chinese Optics Letters 16, n.º 5 (2018): 050201. http://dx.doi.org/10.3788/col201816.050201.

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25

Mu, Tong, e Yaoliang Song. "Time reversal imaging based on joint space–frequency and frequency–frequency data". International Journal of Microwave and Wireless Technologies 11, n.º 3 (14 de janeiro de 2019): 207–14. http://dx.doi.org/10.1017/s1759078718001691.

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AbstractA new time reversal (TR) method for target imaging is proposed in this paper. Through single measurement by the antenna array, the received signals are utilized to form the space–frequency–frequency multistatic data matrix (MDM). Singular value decomposition is applied to the matrix to obtain the left singular vectors which span the signal subspace. The obtained vectors are divided into multiple subvectors by two different schemes and used to provide target signatures in the form of coarse frequency dependence and relative phase shifts that can be exploited to construct the imaging function. The performance of the proposed method is investigated through numerical simulations for both single and multiple targets, and the results are compared with the traditional TR method using the frequency–frequency MDM. It turned out that the proposed method is able to achieve high resolution with limited array aperture and shows satisfactory robustness in noise environment. Furthermore, experimental results are provided to show the availability of the method in practical applications.

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26

Shim, Ho-Seok, Jin-Seong Roh, Seo-Yeong Mun e Kyung-Whan Yeom. "Frequency Synthesizer Using a Frequency-Locked Loop". Journal of Korean Institute of Electromagnetic Engineering and Science 31, n.º 6 (junho de 2020): 517–25. http://dx.doi.org/10.5515/kjkiees.2020.31.6.517.

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27

Murrieta-Rico, Fabian N., Vitalii Petranovskii, Oleg Yu Sergiyenko, Daniel Hernandez-Balbuena, Alexey Pestryakov e Vyra Tyrsa. "Frequency Domain Sensors and Frequency Measurement Techniques". Applied Mechanics and Materials 756 (abril de 2015): 575–84. http://dx.doi.org/10.4028/www.scientific.net/amm.756.575.

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Getting fast and accurate information is of paramount importance for most monitoring, data acquisition, and monitoring systems; there are sensors that transform their input into a frequency domain output, this kind of sensors are known as Frequency Domain Sensors (FDS); when the value of the output frequency is measured in a FDS, the value of the sensor’s input (measurand) can be calculated, that is why the frequency measurement in the output of FDS is critical for using such sensors. In this work different kinds of resonant sensors (FDS) are reviewed; also frequency measurement techniques are explored; finally a novel frequency measurement method is proposed and analyzed for resolution improvement in frequency domain sensors.

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28

Tomac, Mehmet N., e Elias Sundström. "Adjustable Frequency Fluidic Oscillator with Supermode Frequency". AIAA Journal 57, n.º 8 (agosto de 2019): 3349–59. http://dx.doi.org/10.2514/1.j058301.

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29

AKIMOTO, Yoshiaki. "Frequency Stabilized Laser for Optical Frequency Standards." Review of Laser Engineering 21, n.º 12 (1993): 1226–33. http://dx.doi.org/10.2184/lsj.21.12_1226.

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30

Dutta Roy, S. C. "Triple Frequency Impedance Matching by Frequency Transformation". IETE Journal of Education 55, n.º 1 (2 de janeiro de 2014): 47–51. http://dx.doi.org/10.1080/09747338.2014.943583.

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31

HONG, Feng-Lei. "Optical Frequency Combs and Frequency-Stabilized Lasers". Review of Laser Engineering 46, n.º 7 (2018): 379. http://dx.doi.org/10.2184/lsj.46.7_379.

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32

Richman, M. S., T. W. Parks e R. G. Shenoy. "Discrete-time, discrete-frequency, time-frequency analysis". IEEE Transactions on Signal Processing 46, n.º 6 (junho de 1998): 1517–27. http://dx.doi.org/10.1109/78.678465.

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33

Pedersen, Anders Tegtmeier, e Karsten Rottwitt. "Frequency noise in frequency swept fiber laser". Optics Letters 38, n.º 7 (22 de março de 2013): 1089. http://dx.doi.org/10.1364/ol.38.001089.

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34

Yasui, Takeshi, Shuko Yokoyama, Hajime Inaba, Kaoru Minoshima, Tadao Nagatsuma e Tsutomu Araki. "Terahertz Frequency Metrology Based on Frequency Comb". IEEE Journal of Selected Topics in Quantum Electronics 17, n.º 1 (janeiro de 2011): 191–201. http://dx.doi.org/10.1109/jstqe.2010.2047099.

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35

Bauer, Harold R. "Frequency Code: Orofacial Correlates of Fundamental Frequency". Phonetica 44, n.º 3 (1987): 173–91. http://dx.doi.org/10.1159/000261793.

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36

Olsho, Lynne Werner, e Elizabeth G. Koch. "Frequency and practice interactions in frequency discrimination". Journal of the Acoustical Society of America 79, S1 (maio de 1986): S79. http://dx.doi.org/10.1121/1.2023395.

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37

Moore, P. J., J. H. Allmeling e A. T. Johns. "Frequency Relaying Based on Instantaneous Frequency Measurement". IEEE Power Engineering Review 16, n.º 10 (outubro de 1996): 48. http://dx.doi.org/10.1109/mper.1996.4311012.

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38

Mallinger-Dogan, Mickaël, e Mark C. Szigety. "Higher-Frequency Analysis of Low-Frequency Data". Journal of Portfolio Management 41, n.º 1 (31 de outubro de 2014): 121–38. http://dx.doi.org/10.3905/jpm.2014.41.1.121.

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39

Southwood, David J., e Margaret G. Kivelson. "Frequency doubling in ultralow frequency wave signals". Journal of Geophysical Research: Space Physics 102, A12 (1 de dezembro de 1997): 27151–58. http://dx.doi.org/10.1029/97ja02534.

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40

Raspopoulos, Marios, e Stavros Stavrou. "Frequency Selective Buildings Through Frequency Selective Surfaces". IEEE Transactions on Antennas and Propagation 59, n.º 8 (agosto de 2011): 2998–3005. http://dx.doi.org/10.1109/tap.2011.2158779.

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41

Ralbovsky, Marian, Stefan Deix e Rainer Flesch. "Frequency changes in frequency-based damage identification". Structure and Infrastructure Engineering 6, n.º 5 (29 de julho de 2009): 611–19. http://dx.doi.org/10.1080/15732470903068854.

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42

Lee, Chris, Sai Tak Chu, Brent E. Little, Joss Bland-Hawthorn e Sergio Leon-Saval. "Portable frequency combs for optical frequency metrology". Optics Express 20, n.º 15 (9 de julho de 2012): 16671. http://dx.doi.org/10.1364/oe.20.016671.

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43

Franklin, R. N. "The dual frequency radio-frequency sheath revisited". Journal of Physics D: Applied Physics 36, n.º 21 (15 de outubro de 2003): 2660–61. http://dx.doi.org/10.1088/0022-3727/36/21/010.

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44

Radjabi, Bahman. "Frequency switching speed measurement of frequency synthesizers". IEEE Transactions on Instrumentation and Measurement IM-35, n.º 4 (dezembro de 1986): 503–7. http://dx.doi.org/10.1109/tim.1986.6499124.

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45

Chung, Y. C., e T. M. Shay. "Frequency offsets in frequency-locked semiconductor lasers". Fiber and Integrated Optics 13, n.º 4 (janeiro de 1994): 357–63. http://dx.doi.org/10.1080/01468039408202244.

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46

Dalianis, S. A., e J. K. Hammond. "TIME–FREQUENCY SPECTRA FOR FREQUENCY-MODULATED PROCESSES". Mechanical Systems and Signal Processing 11, n.º 4 (julho de 1997): 621–35. http://dx.doi.org/10.1006/mssp.1997.0100.

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47

Miao, Yannan N., Chirn Chye Boon, Manh Anh Do, Kiat Seng Yeo e Wei Meng Lim. "High-frequency low-power fractional frequency multiplier". Microwave and Optical Technology Letters 55, n.º 1 (20 de novembro de 2012): 146–49. http://dx.doi.org/10.1002/mop.27236.

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48

Yu, Ying, Cheng Lei, Minghua Chen, Hongwei Chen, Sigang Yang e Shizhong Xie. "Generation and noise analysis of a wide-band optical -frequency comb based on recirculating frequency shifter". Chinese Optics Letters 12, n.º 10 (2014): 100601. http://dx.doi.org/10.3788/col201412.100601.

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49

Wang, Changsheng, Yunshan Zhang, Jilin Zheng, Jin Li, Zhenxing Sun, Jianqin Shi, Lianyan Li, Rulei Xiao, Tao Fang e Xiangfei Chen. "Frequency-modulated continuous-wave dual-frequency LIDAR based on a monolithic integrated two-section DFB laser". Chinese Optics Letters 19, n.º 11 (2021): 111402. http://dx.doi.org/10.3788/col202119.111402.

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50

Ying Yu, Ying Yu, Cheng Lei Cheng Lei, Minghua Chen Minghua Chen, Hongwei Chen Hongwei Chen, Sigang Yang Sigang Yang e Shizhong Xie Shizhong Xie. "Generation and noise analysis of a wide-band optical -frequency comb based on recirculating frequency shifter". Chinese Optics Letters 12, n.º 10 (2014): 100601–4. http://dx.doi.org/10.3788/col201412.100601.

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