Results 41 to 50 of about 12,266 (242)

Fuel flow prediction of domestic civil aircraft based on LSTM-XGBoost

Hangkong gongcheng jinzhan
The neural network model is widely used in fuel consumption prediction，but single model is less used in the application of civil aircraft because of its low prediction accuracy.
YANG Junli, LI Likun, QIAN Yu, TANG Shengxiang, YANG Peida   +4 more
doaj   +1 more source

Antiresonance and Localization in Quantum Dynamics

, 1996
The phenomenon of quantum antiresonance (QAR), i.e., exactly periodic recurrences in quantum dynamics, is studied in a large class of nonintegrable systems, the modulated kicked rotors (MKRs).
A. Altland, A. J. Lichtenberg, B. Derrida, B. V. Chirikov, B. V. Chirikov, D. L. Shepelyansky, D. L. Shepelyansky, D. R. Grempel, E. Doron, E. Eisenberg, E. Eisenberg, E. L. Ince, E. T. Whittaker, E. T. Whittaker, F. Borgonovi, F. Borgonovi, F. Faure, F. M. Izrailev, F. M. Izrailev, G. Casati, G. Casati, G. Casati, G. P. Berman, I. Dana, I. Dana, I. Dana, I. Dana, I. Dana, I. Dana, I. Dana, J. M. Greene, K. Ishii, M. Griniasty, M. Gutzwiller, M. Gutzwiller, M. V. Berry, N. Brenner, N. F. Mott, N. Shnerb, P. Lloyd, R. Artuso, R. Blümel, R. E. Prange, R. M. Wilcox, S. Fishman, S. Fishman, S. Fishman, S. Fishman, S. J. Shenker, T. Hogg, T. Hogg, Y. Gu   +51 more
core   +2 more sources

Assessment of Nurses' Knowledge toward Alternative Communication Strategies for Children with Autism Spectrum Disorder at the Autism Centers in Dhi Qar Governorate

Kufa Journal for Nursing Sciences, 2021
Background: Alternative communication is a form of communication that can be offered to some people who do not have the ability to speak and helps in developing the child's verbal abilities and the ability to express their feelings, emotions and needs.
Mohammed S. Yasir, Suad Khudhair
doaj   +1 more source

Aero‑engine Condition Assessment Based on Combination Weighting and Cloud Model

Nanjing Hangkong Hangtian Daxue Xuebao
In order to solve the problem of randomness and fuzziness of state information in engine state assessment， this paper proposes an aero-engine state assessment method based on combination weighting and cloud model.
QU Chungang, WANG Changle
doaj   +1 more source

The Effect of Question Answer Relationship (QAR) Strategy in Enhancing Students’ Reading Comprehension

Journal of English Education and Teaching, 2020
The aim of this study was to find out the effect of Question Answer Relationship (QAR) strategy in increasing students’ reading comprehension. The method used in this research was quasi experimental design.
Zelvia Liska Afriani, Meita Anggraini, Riswanto Riswanto   +2 more
doaj   +1 more source

Research on Vertical Overlap of the Paired Approach Based on QAR

IEEE Access, 2022
This paper presents a method to calculate vertical overlap probability based on the position error caused by pilot control. Firstly, a fuzzy correlation model is established and combined with Quick Access Recorder (QAR) data.
Fei Lu, Ruishan Sun, Haonan Chen, Zichen Chen   +3 more
doaj   +1 more source

Quantile spectral processes: Asymptotic analysis and inference [PDF]

, 2016
Quantile- and copula-related spectral concepts recently have been considered by various authors. Those spectra, in their most general form, provide a full characterization of the copulas associated with the pairs $(X_t,X_{t-k})$ in a process $(X_t)_{t\in\
Dette, Holger, Hallin, Marc, Kley, Tobias, Volgushev, Stanislav   +3 more
core   +3 more sources

Machine Learning Approaches to Forecast the Realized Volatility of Crude Oil Prices

Journal of Forecasting, EarlyView.
ABSTRACT This paper presents an evaluation of the accuracy of machine learning (ML) techniques in forecasting the realized volatility of West Texas Intermediate (WTI) crude oil prices. We compare several ML algorithms, including regularization, regression trees, random forests, and neural networks, to several heterogeneous autoregressive (HAR) models ...
Talha Omer, Kristofer Månsson, Pär Sjölander, Gazi Salah Uddin   +3 more
wiley   +1 more source

Prostatic stromal tumors with uncertain malignant potential: A scoping review of clinical challenges and management strategies

UroPrecision, EarlyView.
Abstract Prostatic stromal tumor of uncertain malignant potential (STUMP) is a rare neoplasm arising from specialized prostatic stromal cells with a broad range of histologic patterns and unpredictable clinical behavior. It is often challenging to distinguish STUMP from prostatic stromal sarcoma due to morphological similarities, necessitating specific
Ibrahim A. Khalil, Abdullah M. Al‐Jubouri, Khaled Murshed, Ahmad R. Al‐Qudimat, Majd Alkabbani, Nagy Younes, Khalid Al Jalham, Khalid Al Rumaihi   +7 more
wiley   +1 more source

QUESTION ANSWER RELATIONSHIP (QAR) STRATEGY IN CRITICAL READING ON NARRATIVE TEXT

JALL (Journal of Applied Linguistics and Literacy), 2020
This study figured out the way a teacher implement of QAR strategy in critical reading on narrative text, and investigate students overcome the difficulties in answering narrative text questions by using QAR strategy in critical reading.
Wila Suswika, Rina Herlina, Didih Faridah   +2 more
doaj