Results 71 to 80 of about 359,797 (235)

The Effect of Item Modality and Note-taking on EFL Learners’ Performance on a Listening Test [PDF]

Issues in Language Teaching, 2015
The pivotal role of listening comprehension in second/foreign language learning requires that researchers conduct studies which investigate factors that affect test takers’ performances. The present study was set out to examine whether item modality (i.e.
Karim Sadeghi, Maryam Zeinali
doaj   +1 more source

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

Advanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha, Yingshan Ma, Yong Nam An, Sung‐Un An, Hyeon Hak Jung, Suvi‐Tuuli Varjamo, Jiwon Yoo, Junho Min, Hanvit Kim, Faisal Ahmed, Sang Hoon Chae, Young Min Song, Weiwei Cai, Tawfique Hasan, Zhipei Sun, Dong‐Ho Kang, Hyeon‐Jin Shin, Yunyun Dai, Hoon Hahn Yoon   +18 more
wiley   +1 more source

Digital Discovery of Synthesizable Metal−Organic Frameworks via Molecular Dynamics‑Informed, High‑Fidelity Deep Learning

Advanced Functional Materials, EarlyView.
Tabular foundation model interrogates the synthetic likelihood of metal−organic frameworks. Abstract Metal–organic frameworks (MOFs) are celebrated for their chemical and structural versatility, and in‑silico screening has significantly accelerated their discovery; yet most hypothetical MOFs (hMOFs) never reach the bench because their synthetic ...
Xiaoyu Wu, Rui Zheng, Quan Liu, Jianwen Jiang   +3 more
wiley   +1 more source

Anomalous Stiffening of a Conjugated Polymer During Electrochemical Oxidation

Advanced Functional Materials, EarlyView.
The electromechanical response of a thienothiophene‐based conjugated polymer with triethylene glycol side chains is investigated. Electrochemical nanoindentation and atomic force microscopy reveal a modest and reversible increase in elastic modulus at room temperature upon electrochemical oxidation.
Judith Pons i Tarrés, Di Zhu, Chiara Musumeci, Youngseok Kim, Dilara Meli, Hang Yu, Meghna Jha, Bryan D. Paulsen, Ruiheng Wu, Joost Kimpel, Zachary Laswick, Sri Harish Kumar Paleti, Yadong Zhang, Stephen Barlow, Seth R. Marder, Jenny Nelson, Jonathan Rivnay, Christian Müller   +17 more
wiley   +1 more source

Direction-of-arrival estimation performance analysis of the rank reduction estimator in the presence of finite samples

Tongxin xuebao, 2013
The DOA estimation performance of the rank reduction estimator(RARE) in the case of finite samples was studied. Based on the perturbation theorem associated with the orthogonal projection matrix of the signal (or noise) sub-space, the first-order and ...
Ding WANG, Hui YAO, Ying WU
doaj   +2 more sources

Nonlinear Measures for Characterizing Rough Surface Morphologies

, 1999
We develop a new approach to characterizing the morphology of rough surfaces based on the analysis of the scaling properties of contour loops, i.e. loops of constant height. Given a height profile of the surface we perform independent measurements of the
B. B. Mandelbrot, B. Nienhuis, C. Dasgupta, C. Zeng, C.-S. Chin, Christopher L. Henley, D. Liu, D. Stauffer, David G. Salinas, E. A. Eklund, E. Bouchaud, E. Bouchaud, F. Family, G. Huber, G. Palasantzas, G. Palasantzas, G. Stolovitzky, G. Wagner, H. J. Catrakis, H. Saleur, H. van Beijeren, H.-N. Yang, J. D. Pelletier, J. Kondev, J. Kondev, J. Kondev, J. Krug, J. Krug, J. M. Gómez-Rodŕiguez, J. M. Kim, J. P. Grotzinger, J. Schmittbuhl, Jané Kondev, L. Vásquez, L.-H. Tang, M. Aizenman, M. Avellaneda, M. B. Isichenko, M. B. Isichenko, M. Lässig, M. P. M. den Nijs, M. Plischke, M. S. Spector, M. T. Batchelor, M. T. Batchelor, O. Cardosa, P. Constantin, P. Meakin, R. Ramshankar, S. A. Trugman, S. Das Sarma, S. Das Sarma, S. J. Chey, S. Lovejoy, T. Ala-Nissila, T. Halpin-Healy, T. Holten, W. B. Wright, W. M. Tong, X. Chen, Z. Csahok, Z. Olami, Z. Rácz   +62 more
core   +1 more source

Viscoelasticity‐Induced Controllable Periodic Meso‐Textures of Liquid Crystal Polymers in Additive Manufacturing

Advanced Functional Materials, EarlyView.
Viscoelasticity‐driven instabilities are harnessed to create tunable, periodic textures in 3D‐printed liquid crystalline polymers. This study illustrates how processing parameters control these spontaneous meso‐scale patterns. These unique structural architectures unlock new possibilities for functional devices, ranging from photonic components to ...
Miaomiao Zou, Jiongyi Yan, Dick F. Firdaus, Amy Jin, Jiaxuan Li, Shushan Wang, Ran Chen, Xudong Tao, Zehao Ji, Yi Liu, Zichen Wang, Christos Margadji, Mark Kotter, J. Axel Zeitler, George G. Malliaras, Ronan Daly, Andrew Gleadall, Sebastian W. Pattinson   +17 more
wiley   +1 more source

Systematic Errors and Location Accuracy in Wireless Networks

EURASIP Journal on Advances in Signal Processing, 2006
Wireless systems already provide time delay and signal strength measurements and the future may see antenna arrays that provide directional information. All these may be used for positioning.
Saarnisaari Harri, Bräysy Timo
doaj   +1 more source

An analysis of interplanetary solar radio emissions associated with a coronal mass ejection

, 2016
Coronal mass ejections (CMEs) are large-scale eruptions of magnetized plasma that may cause severe geomagnetic storms if Earth-directed. Here we report a rare instance with comprehensive in situ and remote sensing observa- tions of a CME combining white ...
Bale, SD, Barnes, D, Bonnin, X, Bothmer, V, Davies, JA, Eastwood, JP, Krupar, V, Kruparova, O, Magdalenić, J, Maksimovic, M, Mrotzek, N, Oliveros, JCM, Pluta, A, Santolik, O, Soucek, J, Vourlidas, A   +15 more
core   +3 more sources

Toughening β‐Ga2O3 via Mechanically Seeded Dislocations

Advanced Functional Materials, EarlyView.
β‐Ga2O3 is promising for next‐generation semiconductors but its brittleness limits flexible and high‐precision applications. Here, mechanically seeded dislocations introduced by surface deformation improved damage tolerance in (001) β‐Ga2O3. Nanoindentation and characterization show dislocations suppress cleavage cracks by enabling stable plastic ...
Zanlin Cheng, Jiawen Zhang, Peng Gao, Guosong Zeng, Xufei Fang, Wenjun Lu   +5 more
wiley   +1 more source