Log in

Relevant bibliographies by topics / Array / Journal articles

To see the other types of publications on this topic, follow the link: Array.

Journal articles on the topic 'Array'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Array.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Abdellatif, Ahmed Shehata, Wenyao Zhai, Hari Krishna Pothula, and Morris Repeta. "Array of Arrays: Optimizing Phased Array Tiles." IEEE Antennas and Wireless Propagation Letters 20, no. 5 (2021): 718–22. http://dx.doi.org/10.1109/lawp.2021.3061281.

Full text

APA, Harvard, Vancouver, ISO, and other styles

2

Weitzman, Jonathan B. "Array-of-arrays." Genome Biology 2 (2001): spotlight—20010201–01. http://dx.doi.org/10.1186/gb-spotlight-20010201-01.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Mukit, Naimul, Md Rafiqul Islam, Mohamed Hadi Habaebi, et al. "Designing large-scale antenna array using sub-array." Bulletin of Electrical Engineering and Informatics 8, no. 3 (2019): 906–15. http://dx.doi.org/10.11591/eei.v8i3.1529.

Full text

Abstract:

Antenna array of large scale have been examined for different applications including 5G technology. To get better data rate or a reliable link substantial number of antenna arrays have been utilized to provide high multiplexing gains as well as array gains with high directivity. In this paper a simple but efficient implementation technique of using sub-arrays for the improvement of large-sized uniform arrays. By repeating a small sub-array multiple times large arrays can be designed. This implication of utilizing small array simplifies the design of a larger array which allows the designer to

APA, Harvard, Vancouver, ISO, and other styles

4

Naimul, Mukit Md. Rafiqul Islam, Hadi Habaebi Mohamed, H. M. Zahirul Alam Khaizuran Abdullah A., et al. "Designing large-scale antenna array using sub-array." Bulletin of Electrical Engineering and Informatics 8, no. 3 (2019): 906–15. https://doi.org/10.11591/eei.v8i3.1529.

Full text

Abstract:

Antenna array of large scale have been examined for different applications including 5G technology. To get better data rate or a reliable link substantial number of antenna arrays have been utilized to provide high multiplexing gains as well as array gains with high directivity. In this paper a simple but efficient implementation technique of using sub-arrays for the improvement of large-sized uniform arrays. By repeating a small sub-array multiple times large arrays can be designed. This implication of utilizing small array simplifies the design of a larger array which allows the designer to

APA, Harvard, Vancouver, ISO, and other styles

5

Mervis, J. "An Array of Arrays." Science 275, no. 5298 (1997): 300. http://dx.doi.org/10.1126/science.275.5298.300b.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Liu, Qiaoge, Buhong Wang, Xia Li, Jiwei Tian, Tianhao Cheng, and Shuaiqi Liu. "An optimizing nested MIMO array with hole-free difference coarray." MATEC Web of Conferences 232 (2018): 01055. http://dx.doi.org/10.1051/matecconf/201823201055.

Full text

Abstract:

According to the newly proposed nested MIMO (Multiple-Input Multiple-Input Multiple Output Multiple Array) array design method, we propose to replace the traditional nested array into an optimizing nested array, ie, to optimizing nested MIMO array design. It not only retains the original advantage of nested MIMO array design closed expression with array element position and degree of freedom(DOF), but also greatly improves the array aperture and DOF. Optimizing nested MIMO array firstly uses the optimizing nested array as the transmitting and receiving arrays, and then make the difference set

APA, Harvard, Vancouver, ISO, and other styles

7

Micheva, K. D., N. O'Rourke, B. Busse, and S. J. Smith. "Array Tomography: Production of Arrays." Cold Spring Harbor Protocols 2010, no. 11 (2010): pdb.prot5524. http://dx.doi.org/10.1101/pdb.prot5524.

Full text

APA, Harvard, Vancouver, ISO, and other styles

8

Micheva, K. D., N. O'Rourke, B. Busse, and S. J. Smith. "Array Tomography: Imaging Stained Arrays." Cold Spring Harbor Protocols 2010, no. 11 (2010): pdb.prot5526. http://dx.doi.org/10.1101/pdb.prot5526.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

Yang, T. C., and Zhengzheng Ye. "Array gain of coprime arrays." Journal of the Acoustical Society of America 146, no. 3 (2019): EL306—EL309. http://dx.doi.org/10.1121/1.5126924.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Wittstock, Gunther. "Sensor arrays and array sensors." Analytical and Bioanalytical Chemistry 372, no. 1 (2001): 16–17. http://dx.doi.org/10.1007/s00216-001-1149-y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Streibl, Nörbert, Uwe Nölscher, Jürgen Jahns, and Susan Walker. "Array generation with lenslet arrays." Applied Optics 30, no. 19 (1991): 2739. http://dx.doi.org/10.1364/ao.30.002739.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Thanh Binh, Nguyen, Nguyen Quoc Dinh, and Yoshihide Yamada. "Wideband characteristics of density tapered array antennas." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1356. http://dx.doi.org/10.11591/ijece.v11i2.pp1356-1366.

Full text

Abstract:

In this paper, wideband characteristics of density tapered arrays are clarified by comparing directly the array factors and radiation patterns of 3 tapered arrays structures with array factors and radiation patterns of equally spaced arrays. Calculated results for a density tapered distribution array consisting of 30 elements claims that the array can perform within a bandwidth of 2.5:1 with grating lobe levels lower than -7.8 dB. Additionally, this paper shows a method of determining the effectiveness of unequal spacing arrays in the design of actual antennas. The method is based on calculati

APA, Harvard, Vancouver, ISO, and other styles

13

Nguyen, Thanh Binh, Quoc Dinh Nguyen, and Yamada Yoshihide. "Wideband characteristics of density tapered array antennas." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 2 (2021): 1356–66. https://doi.org/10.11591/ijece.v11i2.pp1356-1366.

Full text

Abstract:

In this paper, wideband characteristics of density tapered arrays are clarified by comparing directly the array factors and radiation patterns of 3 tapered arrays structures with array factors and radiation patterns of equally spaced arrays. Calculated results for a density tapered distribution array consisting of 30 elements claims that the array can perform within a bandwidth of 2.5:1 with grating lobe levels lower than -7.8 dB. Additionally, this paper shows a method of determining the effectiveness of unequal spacing arrays in the design of actual antennas. This method is based on the calc

APA, Harvard, Vancouver, ISO, and other styles

14

Fang, Li Qing, Hong Kai Wang, and Kai Chen. "Analysis of Directional Accuracy of Three Single Arrays." Advanced Materials Research 490-495 (March 2012): 1714–17. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1714.

Full text

Abstract:

Acoustic sensoxr array technology is the one of the key technology of passive acoustic detection technology, whether the single array has a good performance on direction will directly affect the accuracy of the locating system. In order to choose the best single array on direction, in this paper, respectively selected representative plane array and spatial array from a number of typical single arrays to analyze, find out the advantages and disadvantages of two single arrays. On this basis, around the idea of integrating the advantage of symmetric spatial array and plane cross five-element arra

APA, Harvard, Vancouver, ISO, and other styles

15

Távora-Vieira, Dayse, Marcus Voola, Jafri Kuthubutheen, Peter Friedland, Daren Gibson, and Aanand Acharya. "Evaluation of the Performance of OTOPLAN-Based Cochlear Implant Electrode Array Selection: A Retrospective Study." Journal of Personalized Medicine 13, no. 8 (2023): 1276. http://dx.doi.org/10.3390/jpm13081276.

Full text

Abstract:

Otoplan is a surgical planning software designed to assist with cochlear implant surgery. One of its outputs is a recommendation of electrode array type based on imaging parameters. In this retrospective study, we evaluated the differences in auditory outcomes between patients who were implanted with arrays corresponding to those recommended by the Otoplan software versus those in which the array selection differed from the Otoplan recommendation. Pre-operative CT images from 114 patients were imported into the software, and array recommendations were generated. These were compared to the arra

APA, Harvard, Vancouver, ISO, and other styles

16

Patwari, Ashish, and G. Ramachandra Reddy. "A Conceptual Framework for the Use of Minimum Redundancy Linear Arrays and Flexible Arrays in Future Smartphones." International Journal of Antennas and Propagation 2018 (September 18, 2018): 1–12. http://dx.doi.org/10.1155/2018/9629837.

Full text

Abstract:

This work applies existing array processing principles to devise a new area of application. The properties of minimum redundancy linear arrays (MRLAs) and flexible arrays are studied, keeping in mind the possibility of using them in flexible 5G smartphones of the future. Millimeter frequencies for 5G communications enabled the use of a decent number of array elements, even at the user equipment (UE). MRLAs possess attractive properties among linear sparse arrays and flexible conformal arrays (flexible arrays) operate satisfactorily even when the surface they are built into changes shape. To th

APA, Harvard, Vancouver, ISO, and other styles

17

Acciaro, Vincenzo, and Amiya Nayak. "Characterization of Catastrophic Faults in Reconfigurable Systolic Arrays." VLSI Design 7, no. 2 (1998): 143–50. http://dx.doi.org/10.1155/1998/79841.

Full text

Abstract:

A common technique widely used to achieve fault tolerance in systolic arrays consists in incorporating in the array additional processing elements (PEs) and extra bypass links. Given a sufficient number of PEs and a large enough set of bypass links, it might seem that the array can easily tolerate a large number of faults provided they do not occur in consecutive locations. It is not always the case as shown in this paper. In fact, certain fault patterns exist and may occur which would prevent any kind of restructuring of the aray, thus making the structure unusable. For a given set of bypass

APA, Harvard, Vancouver, ISO, and other styles

18

Liu, Jiang, and Sheng Li. "Focusing properties of linear phase-conjugate array." Sound & Vibration 59, no. 1 (2024): 1830. http://dx.doi.org/10.59400/sv1830.

Full text

Abstract:

Phase conjugation generates a backpropagating field that refocuses on the original source, rendering it an effective technique for sound source localization. In addition, linear arrays are widely used in underwater source localization. Therefore, investigating the focusing properties of a linear phase-conjugate array is crucial. This study analyzes the backpropagating field produced by phase-conjugate arrays, proposing indicators for focus bias (FB), focal point size (FS), and sidelobe interference (SLI) to quantitatively characterize these properties. Numerical simulations of the focusing pro

APA, Harvard, Vancouver, ISO, and other styles

19

LECHTCHINSKY, ROMAN, MANUEL M. T. CHAKRAVARTY, and GABRIELE KELLER. "COSTING NESTED ARRAY CODES." Parallel Processing Letters 12, no. 02 (2002): 249–66. http://dx.doi.org/10.1142/s0129626402000951.

Full text

Abstract:

We discuss a language-based cost model for array programs built on the notions of work complexity and parallel depth. The programs operate over data structures comprising nested arrays and recursive product-sum types. In a purely functional setting, such programs can be implemented by way of the flattening transformation that converts codes over nested arrays into vectorised code over flat arrays. Flat arrays lend themselves to a particularly efficient implementation on standard hardware, but the overall efficiency of the approach depends on the flattening transformation preserving the asympto

APA, Harvard, Vancouver, ISO, and other styles

20

Sun, Muye, and Tianyu Duanmu. "DOA estimation technology based on array signal processing nested array." Applied and Computational Engineering 64, no. 1 (2024): 23–29. http://dx.doi.org/10.54254/2755-2721/64/20241345.

Full text

Abstract:

Research on non-uniform arrays has always been a focus of attention for scholars both domestically and internationally. Part of the research concentrates on existing non-uniform arrays, while another part focuses on optimizing the position of array elements or expanding the structure. Of course, there are also studies on one-dimensional and two-dimensional DOA estimation algorithms based on array spatial shapes, despite some issues. As long as there is a demand for spatial domain target positioning, the development and refinement of non-uniform arrays will continue to be a hot research directi

APA, Harvard, Vancouver, ISO, and other styles

21

Yang, Chunpeng, Ye Dai, Hanxuan Zhou, and Bufeng Zhou. "A radar array expansion design method based on modular subarray layout." Journal of Physics: Conference Series 2853, no. 1 (2024): 012024. http://dx.doi.org/10.1088/1742-6596/2853/1/012024.

Full text

Abstract:

Abstract This paper introduces a design method for expandable subarray structures used in phased array radar arrays. Based on the structural characteristics of modular subarray layout for large radar arrays, this paper analyzes the assembly dimension chain tolerance based on subarray expansion. One third of the allowable deviation of the radar array is used as the subarray design tolerance, and the size tolerance of each installation surface of the subarray is designed according to the design tolerance. Finally, the subarray array is assembled into any size of radar array, and the probability

APA, Harvard, Vancouver, ISO, and other styles

22

Wu, Jinping, Wenxiao Qiao, Xiaohua Che, Xiaodong Ju, Junqiang Lu, and Wenhe Wu. "Experimental study on the radiation characteristics of downhole acoustic phased combined arc array transmitter." GEOPHYSICS 78, no. 1 (2013): D1—D9. http://dx.doi.org/10.1190/geo2012-0114.1.

Full text

Abstract:

A new kind of acoustic phased combined arc array transmitter with controllable directivity presented can be used in 3D acoustic image logging. The phased combined arc array is composed of numerous phased arc arrays placed equally along an axis. Each phased arc array contains several array elements arranged around a circumference. The phased combined arc array is considered as the combination of phased arc arrays and linear phased arrays. A directional radiation acoustic beam in the space is generated by simultaneously controlling the phase delay of excitation signals exerted on array elements

APA, Harvard, Vancouver, ISO, and other styles

23

PEYTON JONES, SIMON. "16 Arrays." Journal of Functional Programming 13, no. 1 (2003): 173–78. http://dx.doi.org/10.1017/s0956796803001813.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

HOU, Shuhua, Xuanzhi ZHAO, Zengli LIU, Yi PENG, and Na WANG. "Ternary redundant sparse linear array design with high robustness." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 41, no. 1 (2023): 125–35. http://dx.doi.org/10.1051/jnwpu/20234110125.

Full text

Abstract:

Sparse linear array is prone to element failure affected by environmental and other factors in practical application, resulting in the decline of degrees of freedom and the attenuation or even failure of direction of arrival (DOA) estimation performance. To address this problem, a ternary redundant sparse array composed of three uniform linear arrays with different spacings at specific distances is designed, and the analytical expression of its degrees of freedom is derived. The configuration rules of the array are concise, and the difference coarrays of the array are hole-free. Mathematically

APA, Harvard, Vancouver, ISO, and other styles

25

Zhao, Jian, Qian Sun, Ning Zhou, Hao Liu, and Haizheng Wang. "A Photovoltaic Array Fault Diagnosis Method Considering the Photovoltaic Output Deviation Characteristics." International Journal of Photoenergy 2020 (March 1, 2020): 1–11. http://dx.doi.org/10.1155/2020/2176971.

Full text

Abstract:

There are a large number of photovoltaic (PV) arrays in large-scale PV power plants or regional distributed PV power plants, and the output of different arrays fluctuates with the external conditions. The deviation and evolution information of the array output are easily covered by the random fluctuations of the PV output, which makes the fault diagnosis of PV arrays difficult. In this paper, a fault diagnosis method based on the deviation characteristics of the PV array output is proposed. Based on the current of the PV array on the DC (direct current) side, the deviation characteristics of t

APA, Harvard, Vancouver, ISO, and other styles

26

Venkata Rama Rao, S., A. Mallikarjuna Prasad, and Ch Santhi Rani. "Direction of Arrival Estimation of Uncorrelated Signals Using Root-MUSIC Algorithm for ULAs and UCAs." International Journal of Engineering & Technology 7, no. 4.36 (2018): 398. http://dx.doi.org/10.14419/ijet.v7i4.36.23813.

Full text

Abstract:

In this paper, Root-MUSIC algorithm for direction of arrival (DOA) estimation of uncorrelated signals is explored both for uniform linear and uniform circular arrays. The basic problem in Uniform Linear Arrays (ULAs) is Mutual coupling between the individual elements of the antenna array. This problem is reduced in Uniform Circular Arrays (UCAs) because of its symmetric structure. The DOA estimation of uncorrelated signals that have different power levels is simulated on a MATLAB environment. And the noise consider is white across all the array elements. The factors considered for simulation a

APA, Harvard, Vancouver, ISO, and other styles

27

Micek, Piotr, and Dariusz Grzybek. "Experimental Analysis of the Arrays of Macro Fiber Composite Patches for Rotational Piezoelectric Energy Harvesting from a Shaft." Energies 14, no. 16 (2021): 4815. http://dx.doi.org/10.3390/en14164815.

Full text

Abstract:

Four arrays of three MFC patches, glued onto a rotating shaft, were compared in laboratory research. The first array was based on a delta circuit and equipped with one three-phase rectifier; the second array was based on a star circuit and equipped with one three-phase rectifier; the third array was based on parallel connection and equipped with three full-bridge rectifiers; and the fourth array was based on a series connection and equipped with three full-bridge rectifiers. The array based on a delta circuit generated the highest value of maximal electric power in comparison to the rest of ar

APA, Harvard, Vancouver, ISO, and other styles

28

Yoon, Hansol, and Tai-Kyong Song. "Sparse Rectangular and Spiral Array Designs for 3D Medical Ultrasound Imaging." Sensors 20, no. 1 (2019): 173. http://dx.doi.org/10.3390/s20010173.

Full text

Abstract:

In three-dimensional (3D) medical ultrasound imaging with two-dimensional (2D) arrays, sparse 2D arrays have been studied to reduce the number of active channels. Among them, sparse 2D arrays with regular or uniform arrangements of elements have advantages of low side lobe energy and uniform field responses over the entire field of view. This paper presents two uniform sparse array models: sparse rectangular arrays (SRAs) on a rectangular grid and sparse spiral arrays (SSAs) on a sunflower grid. Both arrays can be easily implemented on the commercially available or the custom-made arrays. To s

APA, Harvard, Vancouver, ISO, and other styles

29

Wang, Wei, Min Zhu, and Bo Yang. "Positioning Combination Method of USBL Using Four-Element Stereo Array." Sensors 21, no. 22 (2021): 7722. http://dx.doi.org/10.3390/s21227722.

Full text

Abstract:

In the present article, an ultra-short baseline (USBL) combined location method based on three four-element stereo arrays is proposed. In order to solve the problem of the poor positioning effect of acoustic positioning under a high incident angle of signal, two kinds of four-element stereo arrays are designed, and the localization approach of the new array is given. At the same time, for the regular triangular pyramid array, a virtual array element is proposed to construct a planar cross array to improve the poor positioning effect of the regular triangular pyramid array at a low incident ang

APA, Harvard, Vancouver, ISO, and other styles

30

Fang, Li Qing, Hong Kai Wang, and Kai Chen. "Design of Passive Acoustic Location System Based on Double Arrays." Advanced Materials Research 490-495 (March 2012): 1857–61. http://dx.doi.org/10.4028/www.scientific.net/amr.490-495.1857.

Full text

Abstract:

The biggest advantage passive acoustic positioning system based on single array is that it has high performance on orientation. However, its positioning error is usually larger. Locating based on multi-array not only gives more information to enhance the locating accurate, but also can eliminate the blind area generated by single array. So its locating performance is better than single-base array. In this paper, taking the system of double arrays for instance, built a passive acoustic positioning system, gave the plan of the system, and designed the tests to compare the accuracy between the si

APA, Harvard, Vancouver, ISO, and other styles

31

Yu, Guicai. "Algorithm to Estimate Direction of Arrival with Interpolated Array Elements for Coprime Array Holes." Mathematical Problems in Engineering 2020 (August 31, 2020): 1–7. http://dx.doi.org/10.1155/2020/1429628.

Full text

Abstract:

A novel method for adding antennas in the coprime arrays is introduced in this study, in order to solve the problem of the reduced degree of freedom of the array in the hole-existing coprime arrays. The minimum number of antennas interpolated in the algorithm maximizes the available degrees of freedom of virtual arrays, and the number of interpolated antennas does not change the original aperture size of the coprime arrays. With the proposed algorithm, the estimate of the direction of arrival is more accurate for a given signal-to-noise ratio. The scheme first finds the regular pattern of hole

APA, Harvard, Vancouver, ISO, and other styles

32

Al‐Kurd, Azmi A., and Robert P. Porter. "Holographic array processing using truncated arrays." Journal of the Acoustical Society of America 93, no. 4 (1993): 2373. http://dx.doi.org/10.1121/1.406125.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Hoctor, R. T., and S. A. Kassam. "Array redundancy for active line arrays." IEEE Transactions on Image Processing 5, no. 7 (1996): 1179–83. http://dx.doi.org/10.1109/83.502396.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Liu, Yuanyuan, Dongyue Jin, Xin Lei, et al. "Improvement of current crowding effect in VCSEL arrays with non-uniform oxidation aperture design." MATEC Web of Conferences 395 (2024): 01002. http://dx.doi.org/10.1051/matecconf/202439501002.

Full text

Abstract:

A compact electro-opto-thermal model of 2-D vertical cavity surface emitting laser (VCSEL) arrays considering the current crowding effect in each array cell is established to study the impact of oxidation aperture on the device performance. Simulated results shows that increasing oxidation aperture of array cell is helpful to improve the uniformity of current density distribution. With careful design of non-uniform oxidation aperture layout, both the uniformity of the temperature distribution and the current distribution is improved by 36.52% and 42.08%, respectively. Furthermore, 3×3 VCSEL ar

APA, Harvard, Vancouver, ISO, and other styles

35

Han, Rong Rong, and Hui Sun. "Calculation of Array Gain in the Reverberation Field." Advanced Materials Research 457-458 (January 2012): 644–49. http://dx.doi.org/10.4028/www.scientific.net/amr.457-458.644.

Full text

Abstract:

If the number and the location of each cell in the array is determined, the space array processing gain is constant in designing the uniform line array in isotropic acoustic field. However, the spatial distribution of reverberation field will affect against the array gain, when the arrays are in anisotropic reverberation field. Reverberation is the unique interference of active sonar, and the energy distribution of space in reverberation field is anisotropic and random. Therefore, the arrays gain problem can be get in researching on the correlation between arrays in the reverberant field. In t

APA, Harvard, Vancouver, ISO, and other styles

36

Yu, Jing Jing, and Fa Shan Yu. "Evolutionary Algorithm for Microphone Array Optimization." Applied Mechanics and Materials 143-144 (December 2011): 287–92. http://dx.doi.org/10.4028/www.scientific.net/amm.143-144.287.

Full text

Abstract:

This paper presented a genetic algorithm (GA) to optimize element placements of microphone array with the purpose of maximizing beamforming SNR for given possible distribution of sound sources. A function based on relationship between statistical geometry descriptors and array performance matrices was applied as the objective function of GA. Optimization experiments of 1D linear array and 2D planar array were performed to demonstrate that this algorithm can effectively sort out superior arrays with significant SNR improvements over randomly generated arrays and regular arrays. High successful

APA, Harvard, Vancouver, ISO, and other styles

37

O'NEILL, MELISSA E., and F. WARREN BURTON. "A new method for functional arrays." Journal of Functional Programming 7, no. 5 (1997): 487–513. http://dx.doi.org/10.1017/s0956796897002852.

Full text

Abstract:

Arrays are probably the most widely used data structure in imperative programming languages, yet functional languages typically only support arrays in a limited manner, or prohibit them entirely. This is not too surprising, since most other mutable data structures, such as trees, have elegant immutable analogues in the functional world, whereas arrays do not. Previous attempts at addressing the problem have suffered from one of three weaknesses, either that they don't support arrays as a persistent data structure (unlike the functional analogues of other imperative data structures), or that th

APA, Harvard, Vancouver, ISO, and other styles

38

Sankar, V. A., and P. V. Y. Jayasree. "Design and Analysis of Novel Fractal Linear and Planar Array Antennas for Satellite Applications." Advanced Electromagnetics 5, no. 3 (2016): 56. http://dx.doi.org/10.7716/aem.v5i3.400.

Full text

Abstract:

This article proposed a new geometric design methodology for the systematic expansion of fractal linear and planar array antennas. Using this proposed geometric design methodology any deterministic polygon shape can be constructed. In this article, two element fractal linear and triangular array antennas are examined using proposed methodology up to four iterations of two expansion factors. Due to the repetitive nature of the proposed geometric design methodology, both linear and planar fractal arrays shows multi-beam behavior with excellent array factor properties. The behavior of the propose

APA, Harvard, Vancouver, ISO, and other styles

39

Liu, Jiancheng, Feng Shi, Yecheng Sun, and Peng Li. "An ADS-Based Sparse Optimization Method for Sonar Imaging Sensor Arrays." Applied Sciences 10, no. 9 (2020): 3176. http://dx.doi.org/10.3390/app10093176.

Full text

Abstract:

The Mills Cross sonar sensor array, achieved by the virtual element technology, is one way to build a low-complexity and low-cost imaging system while not decreasing the imaging quality. This type of sensor array is widely investigated and applied in sensor imaging. However, the Mills Cross array still holds some redundancy in sensor spatial sampling, and it means that this sensor array may be further thinned. For this reason, the Almost Different Sets (ADS) method is proposed to further thin the Mills Cross array. First, the original Mills Cross array is divided into several transversal linea

APA, Harvard, Vancouver, ISO, and other styles

40

Zhang, Hang, Chunchi Ma, and Tianbin Li. "Quantitative Evaluation of the “Non-Enclosed” Microseismic Array: A Case Study in a Deeply Buried Twin-Tube Tunnel." Energies 12, no. 10 (2019): 2006. http://dx.doi.org/10.3390/en12102006.

Full text

Abstract:

The high-stress hazards of underground engineering have stimulated the exploration of microseismic monitoring and early warning methods. To achieve a good monitoring effect, the monitoring object is usually enclosed by a microseismic array (sensor array) (e.g., slope engineering, etc.). However, some characteristics of a buried tunnel, including “linear”, “deep-buried”, and “long”, make it difficult to deploy a reasonable microseismic array, which leads to the microseismic array being non-enclosed for the monitoring object. Application of the non-enclosed microseismic array yields decreases th

APA, Harvard, Vancouver, ISO, and other styles

41

Okamoto, Kyoka, and Kan Okubo. "Arrangement design for horizontally omnidirectional audible sound source using facing ultrasonic transducer arrays." Japanese Journal of Applied Physics 61, SG (2022): SG1028. http://dx.doi.org/10.35848/1347-4065/ac4c09.

Full text

Abstract:

Abstract We developed an audible sound source with horizontal omnidirectional patterns using facing ultrasonic transducer arrays. The arrays emitted sound with different ultrasonic frequencies from each side, and an audible sound with a differential frequency is generated between input ultrasonic signals. In particular, we designed and created a new array that can control the number of transducers driven in the array. We evaluated the frequency–amplitude characteristics and directivity when the transducers in the array were driven in an annular shape. There is an optimum array shape and number

APA, Harvard, Vancouver, ISO, and other styles

42

Mudiyala, Jahnavi, Hayeong Shim, Donghyun Kim, and Yongrae Roh. "Development of a Dual-Layer Structure for Cymbal Transducer Arrays to Achieve a Wider Bandwidth." Sensors 22, no. 17 (2022): 6614. http://dx.doi.org/10.3390/s22176614.

Full text

Abstract:

Cymbal transducers are typically grouped and arranged in planar arrays. For projector arrays, a wide bandwidth on the transmitting voltage response (TVR) spectrum is required for better underwater communication and data transmission within a short time. The purpose of this study is to develop a wideband cymbal array by controlling the center-to-center (CTC) spacing between the cymbal transducers in the array. In the practical design of the array, due to the arrangement of elements in one layer, the minimum CTC spacing between the cymbals is constrained to the diameter of the cymbals in use. To

APA, Harvard, Vancouver, ISO, and other styles

43

Woo, Myung Kyun, Lance DelaBarre, Matt Thomas Waks, et al. "Evaluation of 8-Channel Radiative Antenna Arrays for Human Head Imaging at 10.5 Tesla." Sensors 21, no. 18 (2021): 6000. http://dx.doi.org/10.3390/s21186000.

Full text

Abstract:

For human head magnetic resonance imaging at 10.5 tesla (T), we built an 8-channel transceiver dipole antenna array and evaluated the influence of coaxial feed cables. The influence of coaxial feed cables was evaluated in simulation and compared against a physically constructed array in terms of transmit magnetic field (B1+) and specific absorption rate (SAR) efficiency. A substantial drop (23.1% in simulation and 20.7% in experiment) in B1+ efficiency was observed with a tight coaxial feed cable setup. For the investigation of the feed location, the center-fed dipole antenna array was compare

APA, Harvard, Vancouver, ISO, and other styles

44

Wu, Tao, Yiwen Li, Zhengxin Li, Yijie Huang, and Jiwei Xu. "A 2D Nested Array Based DOA Estimator for Incoherently Distributed Sources via Sparse Representation Utilizing L1-Norm." International Journal of Antennas and Propagation 2019 (July 3, 2019): 1–11. http://dx.doi.org/10.1155/2019/6941963.

Full text

Abstract:

Nested arrays are sparse arrays composed of subarrays with nonuniform sensor spacing. Compared with traditional uniform arrays, nested arrays have more degree of freedoms (DOFs) and larger apertures. In this paper, a nested array has been proposed as well as a direction-of-arrival (DOA) estimation method for two-dimensional (2D) incoherently distributed (ID) sources. A virtual array is firstly obtained through vectorization of the cross-correlation matrix of subarrays. Sensor positions of the virtual array and the optimal configuration of the nested array are derived next. Then rotational inva

APA, Harvard, Vancouver, ISO, and other styles

45

Chepala, Anil, Vincent Fusco, Umair Naeem, and Adrian McKernan. "Uniform Linear Antenna Array Beamsteering Based on Phase-Locked Loops." Electronics 12, no. 4 (2023): 780. http://dx.doi.org/10.3390/electronics12040780.

Full text

Abstract:

Phased arrays are extensively used in many modern beam-scanning applications such as radar and satellite communications. Electronic beam scanning makes phased arrays an important aspect of modern antenna array systems. This Tutorial aims to promote the basic understanding of the principle and operation of a phased array to general undergraduate students. This paper starts with a discussion on the theory of operation and some basic definitions of antenna parameters followed by derivations of two-element and N-element array patterns and, finally, a five-element array design. The essential hardwa

APA, Harvard, Vancouver, ISO, and other styles

46

Galli-Resta, Lucia, Elena Novelli, and Alessandro Viegi. "Dynamic microtubule-dependent interactions position homotypic neurones in regular monolayered arrays during retinal development." Development 129, no. 16 (2002): 3803–14. http://dx.doi.org/10.1242/dev.129.16.3803.

Full text

Abstract:

In the vertebrate retina cell layers support serial processing, while monolayered arrays of homotypic neurones tile each layer to allow parallel processing. How neurones form layers and arrays is still largely unknown. We show that monolayered retinal arrays are dynamic structures based on dendritic interactions between the array cells. The analysis of three developing retinal arrays shows that these become regular as a net of dendritic processes links neighbouring array cells. Molecular or pharmacological perturbations of microtubules within dendrites lead to a stereotyped and reversible disr

APA, Harvard, Vancouver, ISO, and other styles

47

Dorer, Douglas R., and Steven Henikoff. "Transgene Repeat Arrays Interact With Distant Heterochromatin and Cause Silencing in cis and trans." Genetics 147, no. 3 (1997): 1181–90. http://dx.doi.org/10.1093/genetics/147.3.1181.

Full text

Abstract:

Tandem repeats of Drosophila transgenes can cause heterochromatic variegation for transgene expression in a copy-number and orientation-dependent manner. Here, we demonstrate different ways in which these transgene repeat arrays interact with other sequences at a distance, displaying properties identical to those of a naturally occurring block of interstitial heterochromatin. Arrays consisting of tandemly repeated white transgenes are strongly affected by proximity to constitutive heterochromatin. Moving an array closer to heterochromatin enhanced variegation, and enhancement was reverted by r

APA, Harvard, Vancouver, ISO, and other styles

48

Szalai, Sándor, László Szarka, Erno˝ Prácser, Frank Bosch, Imre Müller, and Pascal Turberg. "Geoelectric mapping of near‐surface karstic fractures by using null arrays." GEOPHYSICS 67, no. 6 (2002): 1769–78. http://dx.doi.org/10.1190/1.1527077.

Full text

Abstract:

The term “null array” is introduced for those electrode configurations where the measured potential difference is zero above a homogeneous half‐space when using a measuring dipole M0N0. Different types of null arrays (three‐electrode, Schlumberger, and dipole axial/equatorial null arrays) and their corresponding traditional arrays are studied. It was shown in a field study carried out in a karstified limestone area covered by thin sediments that it is possible to obtain geologically meaningful results with null‐array techniques. The main features of the null‐array data are as follows. (1) Null

APA, Harvard, Vancouver, ISO, and other styles

49

ma, fei, Sipei Zhao, and Thushara Abhayapala. "Physics-informed neural network assisted spherical microphone array signal processing." Journal of the Acoustical Society of America 154, no. 4_supplement (2023): A182. http://dx.doi.org/10.1121/10.0023200.

Full text

Abstract:

Thanks to their rotational symmetry that facilitates three-dimensional signal processing, spherical microphone arrays are the common array apertures used for spatial audio and acoustic applications. However, practical implementations of spherical microphone arrays suffer from two issues. First, at high frequency range, a large number of sensors are needed to accurately capture a sound field. Second, the accompanying signal processing algorithm, i.e., the spherical harmonic decomposition method, requires a variable radius array or a rigid surface array to circumvent the spherical Bessel functio

APA, Harvard, Vancouver, ISO, and other styles

50

Sun, Lei, Minglei Yang, and Baixiao Chen. "Thermos Array: Two-Dimensional Sparse Array with Reduced Mutual Coupling." International Journal of Antennas and Propagation 2018 (2018): 1–8. http://dx.doi.org/10.1155/2018/3624514.

Full text

Abstract:

Sparse planar arrays, such as the billboard array, the open box array, and the two-dimensional nested array, have drawn lots of interest owing to their ability of two-dimensional angle estimation. Unfortunately, these arrays often suffer from mutual-coupling problems due to the large number of sensor pairs with small spacing d (usually equal to a half wavelength), which will degrade the performance of direction of arrival (DOA) estimation. Recently, the two-dimensional half-open box array and the hourglass array are proposed to reduce the mutual coupling. But both of them still have many senso

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!