مقاله
یکشنبه 1397/12/19 ساعت 08:34
As the lips move too quickly, the shape of lips images may differ from one situation to another for an individual such as the cases of smiling or frowning. In this paper, we propose a novel approach to automatic classification of lips images which are captured by digital camera. We focus on the lower part of lips based on morphological features of the grooves.
یکشنبه 1397/12/19 ساعت 08:32
In this paper, we present a scheduling model based on queuing theory to minimize the network make-span in wireless sensor and actor networks. We compute the best rate of distribution of tasks by the network sink to allocated actors through a steady state analysis of our proposed model to solve equations and inequalities.
یکشنبه 1397/12/19 ساعت 08:30
Using self-optimization techniques is the only viable solution for increasing the efficiency in next generation mobile networks. The goal of proposing a self-optimization model is to maximize the network efficiency and increase the quality of services provided to microcell and femto-cell users, considering the limited resources in radio access networks.
یکشنبه 1397/12/19 ساعت 08:28
Modeling and controlling of doubly fed induction generator (DFIG) are presented in this paper. The DFIG is considered in the positive synchronous reference framework under distorted grid voltage situations (DGVS). The DFIG electromagnetic torque, active and reactive powers of the instantaneous stator are discussed under the condition of harmonically DGVS.
یکشنبه 1397/12/19 ساعت 08:24
This paper introduces a millimeter-wave multipleinput-multiple-output (MIMO) antenna for autonomous (selfdriving) cars. The antenna is a modified four-port balanced antipodal Vivaldi which produces four directional beams and provides pattern diversity to cover 90 deg angle of view.
شنبه 1397/12/11 ساعت 11:18
This paper introduces a millimeter-wave multipleinput-multiple-output (MIMO) antenna for autonomous (selfdriving) cars. The antenna is a modified four-port balanced antipodal Vivaldi which produces four directional beams and provides pattern diversity to cover 90 deg angle of view.
شنبه 1397/12/11 ساعت 11:15
این کتاب دربردارندۀ تمامی سرفصلهای موردنیاز یک سیستم مخابرات ماهوارهای است و به معرفی اصول، مدارهای چرخش ماهواره و مسیرها، سختافزارهای ایستگاههای زمینی، اجزای محمولۀ فضایی، محاسبات بودجۀ لینک و افتهای مسیر بهعنوان اصول طراحی محمولههای ماهوارهای، شیوههای ارتباطی، شیوههای دسترسی چندگانه و نقش ماهواره در توسعۀ ارتباطات ماشین به ماشین و اینترنت اشیاء میپردازد.
شنبه 1397/12/11 ساعت 11:13
ماهواره¬ها کاربردهای بسیاری در ارتباطات از راه دور، ارتباطات یک نقطه به چند نقطه، مناطق حادثه‌دیده، کنترل از راه دور، مانیتورینگ، ارتباطات دوطرفه، ردگیری وسایل نقلیه، ارتباطات سیار، ناوبری دریایی، ناوبری هوایی، پخش تلویزیونی و مالتی‌مدیا دارند.
شنبه 1397/12/11 ساعت 11:11
A simple scheme is proposed to achieve the optimal degrees of freedom (DoF) of the temporally correlated two-user multiple-input-multiple-output interference channel with delayed channel state information at the transmitter (CSIT). The delayed CSIT is exploited for temporal alignment at the transmitters and spatial zero-forcing of interference at the receivers.
شنبه 1397/12/11 ساعت 11:07
A dual-polarized dual-layer wideband microstrip antenna is presented. Dual orthogonal linear polarization and enhanced isolation between two ports are achieved by employing two radiating patches perpendicular to each other and printed on two separate substrates.
Analysis and Experiment of Equilateral Triangular Uniaxial-Anisotropic Dielectric Resonator Antennas
شنبه 1397/12/11 ساعت 11:05
The design procedure of a uniaxial anisotropic equilateral triangular dielectric resonator antenna (ETDRA) is presented for the first time. The uniaxial material is realized by a periodic stack of sheets of two dissimilar materials with different dielectric constants.
شنبه 1397/12/11 ساعت 11:03
In this paper a reflectarray (RA) antenna with circular aperture is analysed, designed, fabricated and measured. The unit element consists of a concentric, multi-resonance circular-ring structure with variable size.
