Research on beam management of non-coaxial OAM communication system by Feng ZHENG, Gaoming DUAN, Liangang CHI

“…As a new modulated degree of freedom, orbital angular momentum (OAM) could greatly improve the spectrum utilization of wireless communication.However, the uniform circular array (UCA)-based OAM communication system requires the transceiver array to be static and perfectly aligned, which makes it difficult for OAM to be practically applied.A beam management method based on OAM was proposed, which determined the best beam matching by scanning the beam of receiver and receiver, and the matched beam was used to communicate.Simulation results show that the proposed scheme could effectively reduce the system performance degradation caused by non-coaxial of receiver and transmitter arrays.…”
Get full text

On prescribed mass solutions for a kind of nonlinear elliptic system by Xiaoquan Feng, Qiongfen Zhang

Get full text

An Efficient Dynamic Engineering Implementation Architecture for MIMO Radar System by Ruyue Wen, Hua Zhang, Luping Xu

“…This work provides new ideas and methods for the efficient engineering implementation of MIMO radar systems. This work can support the practical application of MIMO radar, especially the engineering applications of large-scale array MIMO radar systems.…”
Get full text

Phase Pattern Calibration for Interferometric Applications in Spaceborne SAR Systems by Markus Bachmann, Marco Schwerdt, Gabriel Castellanos Alfonzo, Dirk Schrank

“…SAR is a widely used technique to acquire images for geoscience and earth observation applications. Active phased array antennas are commonly used in spaceborne SAR systems. …”
Get full text

An Overview of Traditional and Next-Generation Earthquake Early Warning Systems by Deniz Çaka, Berna Tunç, Süleyman Tunç, Emrah Budakoğlu

“…The recent developments of this system are also analyzed. Next-generation early warning systems consist of a new array-based algorithm composed of two modules for real-time epicenter detection. …”
Get full text

Non-homogeneous BVPs for second-order symmetric Hamiltonian systems by Chen Yingying, Dong Yujun, Wang Baiqian

Get full text

Algorithms for Automatic Detection and Location of Infrasound Events in the PSDL System by Asming Vladimir Ernestovich, Fedorov Andrey Viktorovich

“…The paper presents a description of an automated system and the algorithms implemented in it for detection, association and location of low-frequency acoustic events based on infrasound array data. …”
Get full text

Principles of implementing coaxial microwave connectors for modern radioelectronic systems by Eduard Glushechenko

“…Many modern radioelectronic systems are based on antenna arrays such as APAA (active phased array antenna) or DAAR (digital active array antenna), which require specialized connectors of new types and design solutions for the input/output of the microwave signal. …”
Get full text

Modern Normative and Technical Support of Complex Technical Systems Projects by Світлана Кривова, Олександр Зубаньов, Костянтин Зворикін, Сергій Трубачев

“…According to the results of the criterion analysis of the array of normative and technical documents that can be used by the domestic science-intensive sector of industry, the concepts of building of the programs/projects life cycle for the life cycle of complex technical systems were determined and recommended depending on the nature of the organizations' activities.                …”
Get full text

Existence of positive radial solutions of general quasilinear elliptic systems by Devine Daniel

“…We study the existence of positive, radial solutions of quasilinear elliptic systems of the form Δpu=f1(∣x∣)g1(v)∣∇u∣αinΩ,Δpv=f2(∣x∣)g2(v)h(∣∇u∣)inΩ,\left\{\begin{array}{rcl}{\Delta }_{p}u& =& {f}_{1}\left(| x| ){g}_{1}\left(v){| \nabla u| }^{\alpha }\hspace{1.0em}\hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}\Omega ,\\ {\Delta }_{p}v& =& {f}_{2}\left(| x| ){g}_{2}\left(v)h\left(| \nabla u| )\hspace{1.0em}\hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}\Omega ,\end{array}\right. where α≥0\alpha \ge 0, Δp{\Delta }_{p} is the pp-Laplace operator, p>1p\gt 1, and for i,j=1i,j=1, 2, we assume fi,gj{f}_{i},{g}_{j}, and hh are continuous, non-negative and non-decreasing functions. …”
Get full text

Development of a Migraine Trigger Measurement System Using Surprisal by Dana P. Turner, Emily Caplis, Twinkle Patel, Timothy T. Houle

Get full text

Spatial Linear Coding in Joint Radar and Multicast Communication Systems by D. V. Shtarev, E. A. Mavrychev

“…This paper presents optimization methods for the amplitude-phase distribution in a transmitting antenna array in a system with a common signal for multicast data transmission and radar sensing in a given sector of space. …”
Get full text

On Kirchhoff-Schrödinger-Poisson-type systems with singular and critical nonlinearity by Yang Baoling, Zhang Deli, Liang Sihua

“…This work focuses on the Kirchhoff-Schrödinger-Poisson-type system with singular term and critical Sobolev nonlinearity as follows: −a+b∫Ω∣∇u∣pdxΔpu+ϕ∣u∣q−2u=λu−γ+∣u∣p∗−2uinΩ,−Δϕ=∣u∣qinΩ,u=ϕ=0on∂Ω,\left\{\begin{array}{ll}-\left(a+b\mathop{\displaystyle \int }\limits_{\Omega }{| \nabla u| }^{p}{\rm{d}}x\right){\Delta }_{p}u+\phi {| u| }^{q-2}u=\lambda {u}^{-\gamma }+{| u| }^{{p}^{\ast }-2}u\hspace{1.0em}& \hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}\Omega ,\\ -\Delta \phi ={| u| }^{q}\hspace{1.0em}& \hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}\Omega ,\\ u=\phi =0\hspace{1.0em}& \hspace{0.1em}\text{on}\hspace{0.1em}\hspace{0.33em}\partial \Omega ,\end{array}\right. where Ω\Omega is a bounded domain in RN{{\mathbb{R}}}^{N} with Lipschitz boundary ∂Ω\partial \Omega , 0<γ<10\lt \gamma \lt 1,Δpu=div(∣∇u∣p−2∇u){\Delta }_{p}u={\rm{div}}\left({| \nabla u| }^{p-2}\nabla u), 1<p<q<p*21\lt p\lt q\lt \frac{{p}^{* }}{2}, p*=Np⁄N−p{p}^{* }=Np/N-p is the critical Sobolev exponent, and λ>0\lambda \gt 0. …”
Get full text

Existence of positive radial solution for the elliptic system on an exterior domain by Dan Wang, Yongxiang Li, Shengbin Yang

“…Abstract This article discusses the existence of positive radial solution for the elliptic system { − △ u = K ( | x | ) f ( | x | , u , v , | ∇ u | ) , x ∈ Ω , − △ v = K ( | x | ) g ( | x | , u , v , | ∇ v | ) , x ∈ Ω , α 1 u + β 1 ∂ u ∂ n | ∂ Ω = 0 , α 2 v + β 2 ∂ v ∂ n | ∂ Ω = 0 , lim | x | → ∞ u ( x ) = 0 , lim | x | → ∞ v ( x ) = 0 , $$ \left \{ \textstyle\begin{array}{l} -\triangle u=K(|x|)f(|x|,\ u,\ v,\ |\nabla u|),~~x\in \Omega , \\ -\triangle v=K(|x|)g(|x|,\ u,\ v,\ |\nabla v|),~~x\in \Omega , \\ \alpha _{1}u+\beta _{1}\frac{\partial u}{\partial n}|_{\partial \Omega}=0,~\alpha _{2}v+\beta _{2}\frac{\partial v}{\partial n}|_{ \partial \Omega}=0, \\ \lim _{|x|\to \infty} u(x)=0,~\lim _{|x|\to \infty} v(x)=0, \end{array}\displaystyle \right . $$ where  Ω = { x ∈ R N : | x | > r 0 > 0 } $\Omega =\{x\in \mathbb{R}^{N}:~|x|>r_{0}>0\}$ , N ≥ 3 $N\ge 3$ , K : [ r 0 , ∞ ) → R + $K:[r_{0},~ \infty )\to \mathbb{R}_{+}$ , f and g : [ r 0 , ∞ ) × R + 3 → R + $g:[r_{0},~\infty )\times \mathbb{R}_{+}^{3}\to \mathbb{R}_{+}$ are continuous,  R + = [ 0 , ∞ ) $\mathbb{R}_{+}=[0,~ \infty )$ . …”
Get full text

Common Haplotypes within the Chromosome 1q31.3 Region Determine Systemic Concentrations of the Entire Complement Factor H Protein Family by Bert R.J. Veuskens, Mara van Rossum, Emi Cattenstart, Mieke C. Brouwer, Gerard van Mierlo, Judy Geissler, Karin van Leeuwen, Jin Liu, Robert A. Anstadt, Burt T. Richards, Gregory S. Hageman, Taco W. Kuijpers, Erik J.M. Toonen, Richard B. Pouw

“…Genetic studies of this complex locus have revealed distinct haplotypes associating with a wide array of human diseases, underscoring its significant role in complement regulation. …”
Get full text

RAPID PROTOTYPING OF EMBEDDED PROGRAMMABLE SYSTEMS ON FPGA FOR MULTIMEDIA APPLICATIONS by V. V. Kliuchenia, N. A. Petrovsky

“…This paper illustrates rapid prototyping method applied for mobile multimedia systems with L2L (lossless-to-lossy) compression scheme. …”
Get full text

Fully integrated wearable control system for micro/nanorobot navigation by Zhanxiang Zhang, Lin Wang, Fengqi Jiang, Shimin Yu, Fengtong Ji, Tianhao Sun, He Zhang, Yanhe Zhu, Hao Chang, Tianlong Li, Jie Zhao

“…Here, we introduced a fully integrated wearable control system for micro/nanorobots navigation and manipulation, which is composed of a multifunctional sensor array, an artificial intelligence (AI) planner, and a magnetic field generator. …”
Get full text

Mirroring and nonlinear perturbation of a circuit's system with multiple attractors by Emile Franc Doungmo Goufo

“…The circuit implementation using a Field Programmable Gate Array (FPGA) is performed and concur with the expected results. …”
Get full text

Implementation of DOA Estimation System Based on HackRF One by Zihan Zhang, Wenjie Zhao, Yonghui Huang, Junshe An, Yan Zhu

“…The experimental results show that the synchronization error between channels of the system is less than one sampling period. The system can be used to estimate the incident angles of single carrier signals or modulated signals. …”
Get full text

RGB Color-Discriminable Photonic Synapse for Neuromorphic Vision System by Bum Ho Jeong, Jaewon Lee, Miju Ku, Jongmin Lee, Dohyung Kim, Seokhyun Ham, Kyu-Tae Lee, Young-Beom Kim, Hui Joon Park

Get full text