From Cybernetics to Systems Theory in the First Space Age by Christian Girard

“…Both fields appeared to tackle the pilot problem head-on, either to shoot a pilot down (cybernetics in World War II) – or to send some to the moon and back (systems engineering and management in the Apollo programme). …”
Get full text

A Real-Time Measurement Model of Attention-Allocation Level and Its Application in Simulated SPO Task by Lei Wang, Zhiyang Zhang, Wei Tan, Zhongchang Yang

“…Most human-caused flight accidents can be attributed to a pilot’s attention deficit and monitoring errors. Accordingly, pilots’ attention allocation is strongly related to their task performance. …”
Get full text

Study on the Applicability of an Improved Pile-Beam-Arch Method of Metro Station Construction in the Upper-Soft and Lower-Hard Stratum by Xinping Guo, Annan Jiang, Shanyong Wang

“…Furthermore, the results indicate that, in the construction of six pilot tunnels and three spans of the PBA method, pilot tunnel construction and arch construction have a great influence on the surface settlement. …”
Get full text

Blind decoding method for a multi-cell massive antenna array system by Binbin YAN, Lei SHEN, Xianyang JIANG, Yu HAN

“…In order to overcome the pilot contamination and reduction of decoding performance resulted by neighbouring cell pilot sequences reuse in multi-cell massive array MIMO system，a blind decoding method based on ICA was proposed.The proposed blind decoding method used ICA to separate the received signals of multi-cell users without using pilot sequences.Thus，pilot contamination was avoided and decoding performance would be optimized.Every user’s angle-of-arrival（AOA）was estimated for recognizing the desired user signals and overcoming the uncertainty of signals separated by ICA.The analytical performance and numerical results show that the proposed method has a better performance compared to MMSE decoding and blind decoding method based on singular value decomposition（SVD）.…”
Get full text

The using of impulse methods of influence for production of cast articles from aluminium alloys by A. A. Andrushevich, I. N. Kazanevskaja, M. N. Churic

Get full text

GAN-based channel estimation for massive MIMO system by Yuxiu HUA, Rongpeng LI, Zhifeng ZHAO, Jianjun WU, Honggang ZHANG

“…As a key technology of 5G, massive MIMO system can significantly improve spectrum efficiency and energy efficiency by equipping a large number of antennas in base stations.However, in massive MIMO system, accurate channel estimation faces severe challenges.In order to estimate the channel accurately when the pilot sequence length is smaller than the number of transmitting antennas and the channel noise is strong, the estimation method N2N-GAN was proposed.N2N-GAN firstly denoised the pilot channel at the receiving end, and then used the conditional generative adversarial network to estimate the channel matrix according to the denoised pilot signal.Simulation experiments show that N2N-GAN achieves better robustness against noise compared with traditional channel estimation algorithms and deep learning-based methods.Meanwhile, it can adapt to scenarios with fewer pilot symbols and more antennas.…”
Get full text

Peculiarities of manufacture of castings of diesel engines pistons out of secondary alloys by E. I. Marukovich, A. A. Andrushevich, I. N. Kazanevskaya, M. N. Churik

Get full text

Cast insertions of the tram current collector from aluminium discard by A. A. Andrashevich, I. N. Kazanevskaja, M. N. Churik

Get full text

Spatial changes of forests in a coastal and a remote mountainous area of Greece over a 65-year period by Stavros KOLIOS, George NTOGAS, Efthimios ZERVAS

“… The scope of the study is to detect spatial changes in the forested areas over six decades (1945 - 2010) of two completely different landscapes in Greece (pilot areas). The first pilot area is Kastoria which is a relatively remote and mountainous area located north-western on the Greek peninsula, while the second one is Propontida which is a coastal area in the Chalkidiki peninsula (central Macedonia, Greece). …”
Get full text

The impacts on population health by China's regional health data centers and the potential mechanism of influence by Jiaoli Cai, Yue Li, Peter C Coyte

“…Background China recently established a series of pilot regional health data centers with a mandate to acquire, consolidate, analyze, and translate data into evidence for health policy decision-making. …”
Get full text

Star Identification Algorithm Based on Dynamic Distance Ratio Matching by Ya Dai, Chenguang Shi, Liyan Ben, Hua Zhu, Rui Zhang, Shufan Wu, Sixiang Shan, Yu Xu, Wang Zhou

Get full text

Analisis Geometris Sistem Kendali Elevator Pesawat Udara N219 by Lenny Iryani, Arie S Ramadhan

“…The system of this flight control are controlled by the force given by a pilot so that the aircraft will move to the desired pitch condition. …”
Get full text

Pattern division random access (PDRA) scheme for mMIMO systems by Xiaoming DAI, Lizhuo PANG, Zheng CHANG, Xinyue ZHANG, Yiran XING, Xiyuan WANG

“…To enhance the massive machine-type communications (mMTC) random access (RA) performance, a pattern division random access (PDRA) scheme was proposed for massive multiple-input multiple-output (mMIMO) systems.In this scheme, the pilot contention space was expanded to the pattern-domain.To enlarge the size of contention space without resorting to increasing the physical resources, the pattern-domain pilot was constructed based on the superposition of L cyclically-shifted Zadoff-Chu (ZC) sequences.Simulation results illustrate that the PDRA scheme can reduce pilot collision probability significantly, and improve the access success probability compared with the conventional RA scheme, without compromising excessively on channel estimation and data detection performance.…”
Get full text

A Splay Tree-Based Approach for Efficient Resource Location in P2P Networks by Wei Zhou, Zilong Tan, Shaowen Yao, Shipu Wang

Get full text

PENATAAN KORIDOR PERMUKIMAN KAMPUNG KARANG ANYAR BERBASIS PENGOLAHAN SAMPAH DAUR ULANG DI MAKASSAR by Nursahfika Arman, Irma Rahayu

“…Karang Anyar village located on the road Baji Dakka potential to become a pilot project for waste management in residential areas. …”
Get full text

Edge-Aware Dual-Task Image Watermarking Against Social Network Noise by Hao Jiang, Jiahao Wang, Yuhan Yao, Xingchen Li, Feifei Kou, Xinkun Tang, Limei Qi

Get full text

Evaluation of Yeast Alcohol Acetyltransferases for Ethyl Acetate Production in Clostridium ljungdahlii by Santiago T. Boto, Kareem Gerges, Bettina Bardl, Miriam A. Rosenbaum

Get full text

The Influence of Pile-Beam-Arch Construction on the Stratum and Station Support Structure by Nan Liu, Xiao Tong, Longfei Chang, Yong Lv

“…Based on this, the best sequence of pilot tunnel excavation and arch buckle of the two-story two-span station is obtained, and the optimal pilot tunnel excavation scheme of first the middle and then the side, first the upper and then the lower, and the best arch buckle scheme of the synchronous arch buckle on both sides is determined. …”
Get full text

Research on the Influence of Emission Trading System on Enterprises' Green Technology Innovation by Si Luo, Guohua He

“…This paper uses the data of China's A-share listed companies in Shanghai and Shenzhen stock markets from 2003 to 2014 and takes the pilot emission trading policy in 2007 for a quasinatural experiment to explore the role of the pilot emission trading policy in promoting enterprises' green technology innovation. …”
Get full text

Doubly-selective channel estimation for generalized frequency division multiplexing systems based on deep learning by Ying WANG, Jun REN, Ke SHI, Bin LIN

“…There exist intrinsic inter-carrier interference and inter-subsymbol interference in generalized frequency division multiplexing (GFDM) systems.Under condition of time-frequency doubly selective channels, severe effects of pilot contamination would occur and lead to significant performance degradation for the pilot-based channel estimations.To this end, a channel estimation framework for GFDM systems based on deep learning was proposed, which took the low-resolution image constructed with the least squares estimated channel gains of the pilot symbols as input.Consequently, a high-resolution image about the channel time-frequency response was recovered through a deep residual network, and the channel estimation was achieved for GFDM systems.A simulation system for the proposed GFDM time-frequency doubly selective channel estimation algorithm based on deep residual network was developed, and the optimal parameters of the deep residual network were determined through an offline training process.Simulation results show that the proposed algorithm can achieve better performance near to minimum mean square error (MMSE) estimation in terms of estimation error and bit error rate (BER), and has robust Doppler frequency shift generalization capability.…”
Get full text