Results 91 to 100 of about 546,948 (250)

The Impact of Reform on Economic Growth in China: A Principal Component Analysis [PDF]

The study decomposes the sources of Chinese growth by first making a distinction between technological progress and technical efficiency in the growth accounting framework, and then identifying a series of reform programmes, such as urbanization ...
Sheng, Yu, Song, Ligang
core  

Searching for demography's missing link: Momentum [PDF]

, 2005
This paper is both more theoretical and highly applied; both methodological and policy-oriented. Empirically until recently there has been little work on momentum effects.
Pool, Ian
core  

Joint Control of Radiated and Surface Waves via Space‐Time Coding Metasurfaces

Advanced Functional Materials, EarlyView.
A unified space‐time coding metasurface platform enables simultaneous control of radiated and surface‐confined waves across multiple harmonics. Demonstrated functionalities include multi‐frequency beam shaping; surface‐wave excitation, and hybrid multiplexing.
Zihao Dai, Yi Ning Zheng, Lei Zhang, Xiao Qing Chen, Giuseppe Castaldi, Tie Jun Cui, Vincenzo Galdi   +6 more
wiley   +1 more source

A Multi-Model Machine Learning Framework for Daily Stock Price Prediction

Big Data and Cognitive Computing
Stock price prediction remains a challenging problem due to the inherent volatility and complexity of financial markets. This study proposes a multi-model machine learning framework for one-day-ahead stock price prediction using thirty-six features ...
Bharatendra Rai, Leili Soltanisehat
doaj   +1 more source

Lorentz violating kinematics: Threshold theorems

, 2011
Recent tentative experimental indications, and the subsequent theoretical speculations, regarding possible violations of Lorentz invariance have attracted a vast amount of attention.
AG Cohen, C Barcelo, D Anselmi, D Anselmi, D Anselmi, D Anselmi, D Anselmi, D Anselmi, D Anselmi, D Anselmi, D Anselmi, D Anselmi, D Bear, D Colladay, D Mattingly, D Mattingly, F Klinkhamer, G Amelino-Camelia, G Cacciapaglia, G Dvali, J Alexandre, J Alexandre, Kyle Tate, M Visser, M Visser, M Visser, Matt Visser, P Adamson, P Hořava, R Cowsik, S Judes, S Liberati, S Weinfurtner, SR Coleman, SR Coleman, SS Gubser, T Jacobson, T Jacobson, T Jacobson, T Jacobson, T Jacobson, T Jacobson, TA Jacobson, TP Sotiriou, TP Sotiriou, V Kostelecky, V Kostelecky, V Kostelecky, V Kostelecky, V Kostelecky, V Kostelecky, V Kostelecky, Valentina Baccetti, W Winter, X-J Bi   +54 more
core   +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

One loop renormalization of the non-local gauge invariant operator min_U (A^U_mu)^2 in QCD

, 2007
We compute the one loop anomalous dimension of the gauge invariant dimension two operator min_U (A^U_mu)^2, where U is an element of the gauge group, by exploiting Zwanziger's expansion of the operator in terms of gauge invariant non-local n leg ...
Boucaud, Boucaud, Boucaud, Boucaud, Browne, Browne, Capri, Capri, Chetyrkin, Collins, Cornwall, Cornwall, Curci, Curci, Curci, Curci, Dell'Antonio, Doria, Dudal, Dudal, Dudal, Dudal, Ellwanger, Gorishny, Gracey, Greensite, Gribov, Gubarev, Gubarev, Gubarev, J.A. Gracey, Kondo, Kondo, Kondo, Kondo, Kondo, Nogueira, Parrinello, Savvidy, Schaden, Schaden, Semenov-Tian-Shanskii, Semenov-Tian-Shanskii, Vermaseren, Verschelde, Wschebor, Zwanziger   +46 more
core   +1 more source

Selective Charge Injection via Topological van der Waals Contacts for Barrier‐Free p‐Type TMD Transistors

Advanced Functional Materials, EarlyView.
 Topological van der Waals contacts represent a new class of electrodes for 2D semiconductors, enabling precise control of the Schottky barrier height (SBH) and contact resistance (RC) through interlayer distance and orbital hybridization engineering. In Se‐based transition metal dichalcogenides, these contacts achieve an ultralow SBH of 7 meV, RC of 0.
Soheil Ghods, Ho‐Chan Jang, Jun‐Hui Choi, Min Woo Kim, Hyunjin Lee, Tae‐Hoon Kim, Keun Heo, Hyung Jun Kwun, Taehun Lee, Yoon Kyeung Lee, Sang Hoon Lee, Seung‐Il Kim, Woonhyuk Baek, Sukang Bae, Ji‐Yun Moon, Jae‐Hyun Lee   +15 more
wiley   +1 more source

Optimal Propeller design for future HALE UAV [PDF]

Scientific Technical Review, 2019
The main roles of unmanned air vehicles (UAVs) include: observation, surveillance, transportation, remote sensing and various security tasks. Improved, augmented type of UAVs are high-altitude long-endurance (HALE) aircraft capable and designed, as their
Svorcan Jelena, Hasan Sakib Mohammad, Baltić Marija, Simonović Aleksandar   +3 more
doaj  

Strongly anisotropic roughness in surfaces driven by an oblique particle flux

, 2006
Using field theoretic renormalization, an MBE-type growth process with an obliquely incident influx of atoms is examined. The projection of the beam on the substrate plane selects a "parallel" direction, with rotational invariance restricted to the ...
B. Schmittmann, B. Schmittmann, B. Schmittmann, C. DeDominicis, D. J. Amit, Gunnar Pruessner, H. J. Leamy, H. K. Janssen, H. K. Janssen, H. K. Janssen, Hans-Karl Janssen, J. Krug, J. Zinn-Justin, R. C. Salvarezza, W. W. Mullins   +14 more
core   +1 more source