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Journal articles on the topic 'Barker'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 July 2024

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1

Tang, Yu. "Simulation Research on how to Improve the Range Resolution of Pulse Compression Radar Based on Phase Coding." Applied Mechanics and Materials 143-144 (December 2011): 634–38. http://dx.doi.org/10.4028/www.scientific.net/amm.143-144.634.

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Phase coded radar signal is one of the pulse-pulse modulation signal in the radar system. Based on the characteristics of matched filtering, we theoretically analyze the basic principle of the phase coded compression radar system. In the Matlab platform, we set up a simulation model which is used for matching filter, when the radar transmitting signal is Barke code signal. The simulation results show that Echo signal can obtain certain pulse compression ratio. By the matched filter, the main lobe amplitude of 13 bits Barker code signal is 22 times the rate of side-lobe. 13 bits Barker codes by the matched filter have the maximum pulse compression ratio.

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2

Plater, Suzanne, and Garry Egger. "Barker." Obesity Reviews 12, no. 3 (February 22, 2011): 232. http://dx.doi.org/10.1111/j.1467-789x.2010.00853.x.

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3

Yu, Ruobin. "The Grotesque Body in Pat Barkers Tobys Room." Communications in Humanities Research 18, no. 1 (December 7, 2023): 181–87. http://dx.doi.org/10.54254/2753-7064/18/20231155.

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In Pat Barkers 2012 novel Tobys Room, numerous portraits of grotesque bodies are foundfrom the pregnant mother and the deformed fetus, a dead mans shrunken penis on the dissection table, to the disfigured faces of the soldiers who fought in the First World Warthese grotesque images are closely related and logically intertwined in revealing the characters secret mindset and inner struggles, as well as foreshadowing their fate, arousing the readers a mixed feeling of sympathy and great horror. Relying mainly on Bakhtins and Clarks notions on the grotesque body, this study analyzes the implications of the grotesque body in Tobys Room, articulates the logical connections among them, and explores the authors intention of depicting the grotesque body in the novel. The study concludes that 1) Through the narratives of the grotesque body, Pat Barker weaves the characters tragedies into the dim landscape of British society; 2) Barker is calling for the establishment of a new social order by depicting the grotesque body in the novel.

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4

Thompson, F. M. L. "Theo Barker." Economic History Review 55, no. 3 (August 2002): v—ix. http://dx.doi.org/10.1111/1468-0289.00225.

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5

Daunton, Martin. "Theo Barker." Journal of Transport History 19, no. 2 (September 1998): 93–100. http://dx.doi.org/10.1177/002252669801900202.

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6

Pincock, Stephen. "David Barker." Lancet 382, no. 9899 (October 2013): 1170. http://dx.doi.org/10.1016/s0140-6736(13)62050-4.

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7

Barker, N. P. "A biosystematic study of Pentameris (Arundineae, Poaceae)." Bothalia 23, no. 1 (October 10, 1993): 25–47. http://dx.doi.org/10.4102/abc.v23i1.782.

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A biosystematic study of the endemic southwestern Cape grass genus Pentameris Beauv. is presented. Results of studies on the macro- and micromorphology, leaf blade anatomy and cytology are discussed and illustrated. The results of a cladistic study indicate that the genus is monophyletic, united by the synapomorphies of ovary and fruit characters. The conservation status of the taxa in the genus is assessed, and conservation status codes allocated. A key to the taxa in the genus is presented, and each species is described. Five new species, Pentameris glacialis N.P. Barker, P. hirtiglumis N.P. Barker, P. oreophila N.P. Barker, P. swartbergensis N.P. Barker and P. uniflora N.P. Barker, and one new subspecies, P. longiglumis (Nees) Stapf subsp. gymnocolea N.P. Barker, are described and illustrated.

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8

O’Brien, Gemma, Julian Pitt, Daphne James, and Lynne Roberts. "Quality of care on an inpatient psychiatric unit." Clinical Psychology Forum 1, no. 163 (July 2006): 37–41. http://dx.doi.org/10.53841/bpscpf.2006.1.163.37.

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This article summarises a research project which assessed the experiences of care provided by three inpatient psychiatric wards before and one year after the introduction of the Tidal Model (Barker, 2001; Barker & Buchanan-Barker, 2004) – a client-centred nursing model.

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9

Ihm, Soo Y. "Korean War Project9847Hal Barker, Ted Barker. Korean War Project." Electronic Resources Review 2, no. 5 (May 1998): 52–54. http://dx.doi.org/10.1108/err.1998.2.5.52.47.

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10

Fan, Zeng, John Rudlin, Giorgos Asfis, and Hongying Meng. "Convolution of Barker and Golay Codes for Low Voltage Ultrasonic Testing." Technologies 7, no. 4 (October 10, 2019): 72. http://dx.doi.org/10.3390/technologies7040072.

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Ultrasonic Testing (UT) is one of the most important technologies in Non-Detective Testing (NDT) methods. Recently, Barker code and Golay code pairs as coded excitation signals have been applied in ultrasound imaging system with improved quality. However, the signal-to-noise ratio (SNR) of existing UT system based on Barker code or Golay code can be influenced under high high attenuation materials or noisy conditions. In this paper, we apply the convolution of Barker and Golay codes as coded excitation signals for low voltage UT devices that combines the advantages of Barker code and Golay code together. There is no need to change the hardware of UT system in this method. The proposed method has been analyzed theoretically and then in extensive simulations. The experimental results demonstrated that the main lobe level of the code produced by convolution of Barker code and Golay code pairs is much higher than the simple pulse and the main lobe of the combined code is higher than the traditional Barker code, sidelobe is the same as the baker code that constitutes this combined code. So the peak sidelobe level (PSL) of the combined code is lower than the traditional Barker code. Equipped with this, UT devices can be applied in low voltage situations.

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11

BORWEIN, PETER, and TAMÁS ERDÉLYI. "A NOTE ON BARKER POLYNOMIALS." International Journal of Number Theory 09, no. 03 (April 7, 2013): 759–67. http://dx.doi.org/10.1142/s179304211250159x.

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We call the polynomial [Formula: see text] a Barker polynomial of degree n-1 if each aj ∈{-1, 1} and [Formula: see text] Properties of Barker polynomials were studied by Turyn and Storer thoroughly in the early sixties, and by Saffari in the late eighties. In the last few years P. Borwein and his collaborators revived interest in the study of Barker polynomials (Barker codes, Barker sequences). In this paper we give a new proof of the fact that there is no Barker polynomial of even degree greater than 12, and hence Barker sequences of odd length greater than 13 do not exist. This is intimately tied to irreducibility questions and proved as a consequence of the following new result. Theorem.Ifn ≔ 2m + 1 > 13and[Formula: see text]where eachbj ∈{-1, 0, 1}for even values of j, each bj is an integer divisible by 4 for odd values of j, then there is no polynomial[Formula: see text]such that[Formula: see text], where[Formula: see text]and[Formula: see text]denotes the collection of all polynomials of degree 2m with each of their coefficients in {-1, 1}. A clever usage of Newton's identities plays a central role in our elegant proof.

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12

Carbonell, Curtis D. "Answering Lovecraft: Clive Barker’s embodied fiction." Horror Studies 12, no. 1 (March 1, 2021): 97–117. http://dx.doi.org/10.1386/host_00031_1.

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This article asks how Clive Barker responds to H. P. Lovecraft as a horror writer. It sees in Barker a particular example of how cosmic horror emerges, even as expected Gothic tropes become renewed with interesting variations. In particular, it foregrounds a resistance by Barker to Lovecraft’s insistence that the Weird be a place where writers hint at the monsters that cause ultimate dread rather than drawing them. Barker, though, refuses to balk at such a demand, channelling the same instinct that the later Lovecraft himself developed in categorizing with scientific-like granularity the often horrific particulars of the monstrous. This article poses the Cenobites as a fitting example of how Barker combines cosmic and Gothic tropes, both within the frames of the posthuman and draconic, even as they morphed within a shared universe rooted in a Christianized metanarrative. It focuses on The Scarlet Gospels as the most fitting text in which Barker demonstrates his ability to represent the unrepresentable, a dominant concept within fruitful theorizing by thinkers as diverse as Eugene Thacker, Graham Harman and Thomas Ligotti.

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13

Gavrishev, A. A., and D. L. Osipov. "BUILDING A QUALITY ASSESSMENT CRITERION BINARY BARKER-LIKE CODES." T-Comm 16, no. 12 (2022): 11–16. http://dx.doi.org/10.36724/2072-8735-2022-16-12-11-16.

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The objective of this article is to construct a criterion for evaluating the quality of binary Barker-like codes. The analysis of well-known studies on the formation of these codes with properties close to binary Barker codes is carried out. The analysis showed that in the works devoted to the use of well-known binary Barker-like codes in secure wireless communication systems and the formation of such codes, researchers primarily pay attention to such quality assessment indicators as the autocorrelation function, the length and number of such codes, and others. Based on the analysis of works [5, 9-25], the initial tuple of quality assessment of binary Barker-like codes is formulated, represented by the expression (1). However, the original tuple (1) lacks such an important quality assessment indicator as the linear complexity assessment, which is often taken as one of the primary indicators of crypto resistance. Based on this, the purpose of this article is to increase the accuracy of the evaluation of binary Barker-like codes by applying the identified criterion. The authors of the article, using the Berlekamp-Massey algorithm, evaluated the linear complexity of binary Barker-like codes presented in [9-23]. It has been established that a sufficiently large number of such codes (from 24% to 75%) have insufficient linear complexity, that is, they are non-cryptographic. As a result, they cannot be used in secure wireless communication systems. The result obtained is consistent with other studies in this field. Proceeding from this, when using well-known binary Barker-like codes in secure wireless communication systems, as well as when forming new binary Barker-like codes, it is necessary to pay attention not only to the known quality assessment indicators, but also to their linear complexity. The authors have modified the original tuple represented by expression (1). The modified tuple is represented by expression (2). According to the authors, the modified quality assessment criterion will improve the accuracy of the evaluation of binary Barker-like codes.

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14

Anderson, Colin. "Science at Barker." Journal of Christian Education os-33, no. 3 (December 1990): 29–30. http://dx.doi.org/10.1177/002196579003300310.

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15

Mock, Jack. "Mathematics at Barker." Journal of Christian Education os-33, no. 3 (December 1990): 31–34. http://dx.doi.org/10.1177/002196579003300311.

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16

Henderson, Douglas, and Michael Klein. "John Adair Barker." Physics Today 49, no. 8 (August 1996): 80–81. http://dx.doi.org/10.1063/1.2807742.

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17

Barker, A. "Geoffrey Battersby Barker." BMJ 334, no. 7600 (May 3, 2007): 959.1–959. http://dx.doi.org/10.1136/bmj.39197.638715.be.

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18

Figgins, Roger. "Alan Marcus Barker." BMJ 336, no. 7635 (January 10, 2008): 103.1–103. http://dx.doi.org/10.1136/bmj.39421.726435.be.

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19

Huffman, Carl. "Response to Barker." Classical Philology 105, no. 4 (October 2010): 420–25. http://dx.doi.org/10.1086/659327.

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20

Byrd, Gene. "Bruce M. Barker." Physics Today 43, no. 1 (January 1990): 97–98. http://dx.doi.org/10.1063/1.2810427.

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21

Fox, G. "Geoffrey Neish Barker." BMJ 326, no. 7384 (February 8, 2003): 339a—339. http://dx.doi.org/10.1136/bmj.326.7384.339/a.

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22

Bömer, L., and M. Antweiler. "Polyphase Barker sequences." Electronics Letters 25, no. 23 (1989): 1577. http://dx.doi.org/10.1049/el:19891059.

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23

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 30, no. 1 (January 2000): 2. http://dx.doi.org/10.1177/004947550003000102.

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24

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 30, no. 3 (July 2000): 130. http://dx.doi.org/10.1177/004947550003000303.

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25

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 30, no. 4 (October 2000): 194. http://dx.doi.org/10.1177/004947550003000403.

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26

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 31, no. 1 (January 2001): 50. http://dx.doi.org/10.1177/004947550103100123.

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27

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 31, no. 2 (April 2001): 66. http://dx.doi.org/10.1177/004947550103100202.

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28

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 31, no. 3 (July 2001): 131. http://dx.doi.org/10.1177/004947550103100303.

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29

Jones, Michael, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 32, no. 4 (October 2002): 195. http://dx.doi.org/10.1177/004947550203200404.

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30

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 33, no. 1 (January 2003): 2. http://dx.doi.org/10.1177/004947550303300103.

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31

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 33, no. 2 (April 2003): 66. http://dx.doi.org/10.1177/004947550303300202.

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32

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 33, no. 3 (July 2003): 130. http://dx.doi.org/10.1177/004947550303300303.

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33

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 33, no. 4 (October 2003): 224. http://dx.doi.org/10.1177/004947550303300412.

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34

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 34, no. 1 (January 2004): 63. http://dx.doi.org/10.1177/004947550403400137.

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35

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 34, no. 3 (July 2004): 188. http://dx.doi.org/10.1177/004947550403400328.

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36

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 34, no. 4 (October 2004): 194. http://dx.doi.org/10.1177/004947550403400402.

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37

Simpson, Dick, Richard Johnson, and Kevin Lyles. "TWILEY W. BARKER." PS: Political Science & Politics 42, no. 04 (September 25, 2009): 787. http://dx.doi.org/10.1017/s1049096509990333.

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38

Hare, Kevin G. "Infinite Barker series." Journal of Number Theory 129, no. 12 (December 2009): 2991–99. http://dx.doi.org/10.1016/j.jnt.2009.05.011.

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39

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 27, no. 1 (January 1997): 5. http://dx.doi.org/10.1177/004947559702700104.

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40

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 27, no. 3 (July 1997): 130. http://dx.doi.org/10.1177/004947559702700302.

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41

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 27, no. 4 (October 1997): 226. http://dx.doi.org/10.1177/004947559702700413.

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42

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 27, no. 1_suppl (January 1997): 4. http://dx.doi.org/10.1177/00494755970270s103.

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43

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 28, no. 1 (January 1998): 62. http://dx.doi.org/10.1177/004947559802800127.

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44

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 28, no. 2 (April 1998): 72. http://dx.doi.org/10.1177/004947559802800205.

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45

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 28, no. 3 (July 1998): 130. http://dx.doi.org/10.1177/004947559802800302.

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46

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 28, no. 4 (October 1998): 195. http://dx.doi.org/10.1177/004947559802800402.

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47

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 29, no. 1 (January 1999): 3–4. http://dx.doi.org/10.1177/004947559902900103.

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48

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 29, no. 2 (April 1999): 109. http://dx.doi.org/10.1177/004947559902900218.

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49

Mowbray, Carolyn, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 29, no. 3 (July 1999): 132. http://dx.doi.org/10.1177/004947559902900302.

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50

Whitty, Chris, and Eldryd Parry. "Barker Memorial Prize." Tropical Doctor 35, no. 4 (October 1, 2005): 252. http://dx.doi.org/10.1258/004947505774938800.

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