Results 81 to 90 of about 507,465 (200)

The Effectiveness of Marital Empowerment Program Based on Positive Schemas for Imporving Marital Satisfaction and Differentiation of Couples [PDF]

open access: yesپژوهشنامه روانشناسی مثبت
The putpose of this study was to investigate the effectiveness of the marital empowerment program based on positive schemas for improving marital satisfaction and differentiation among couples. The research method was quasi-experimental using a pre-test,
pegah Mehrtalab   +2 more
doaj   +1 more source

A novel framework for identifying fishing grounds from AIS data containing vessels of unknown types

open access: yesFrontiers in Marine Science
To address the issue of precisely identifying fishing grounds in vast sea areas, this study proposes a framework that includes a fishing behavior detection model and a fishing ground identification model, considering vessels of unknown types. The absence
Changhai Huang   +4 more
doaj   +1 more source

Practical CNN-Based Beam Selection for Wideband Single-Receiver Switched Beam Antenna

open access: yesIEEE Access
In this paper, a beam selection method is presented for a switched beam antenna (SBA) specifically designed and built for long-range wireless communications.
Mahdi Jamshidi, Seyed Hassan Sedighy
doaj   +1 more source

Sex-based differences in the prevalence of acute mountain sickness: a meta-analysis

open access: yesMilitary Medical Research, 2019
Background When lowlanders rapidly ascend to altitudes > 2500 m, they may develop acute mountain sickness (AMS). The individual susceptibility, ascending velocity, time spent at altitude, activity levels and altitude reached are considered risk factors ...
Yun-Peng Hou   +5 more
doaj   +1 more source

A Comprehensive BLE-Compliant Dataset for Indoor Positioning Systems

open access: yesIEEE Open Journal of the Communications Society
The Direction Finding (DF) feature in Bluetooth Low Energy (BLE) 5.1 has made the technology an increasingly attractive choice for Indoor Positioning Systems (IPS), as it allows devices to estimate the Angle of Arrival (AoA) of incoming signals.
Andrey Fabris   +5 more
doaj   +1 more source

Novel Design and Implementation of Base Line Interferometry Direction Finding Bli Df Algorithm

open access: yesInternational Journal of Electronics and Communication Engineering, 2014
Ch. Kameswara Rao, Singh A K, Singh S P
openaire   +1 more source

Comparison of two options for building three-coordinate electronic intelligence stations

open access: yesРадіоелектронні і комп'ютерні системи
The subject–coordinate measurement methods in ground electronic intelligence (ELINT) stations. The goal is to conduct a comparative analysis of two options for the composition ground ELINT stations in terms of accuracy of measuring coordinate information.
Anatolij Kobzev   +2 more
doaj   +1 more source

DSSS detection and direction finding methods for a DSP-based small aperture DF system

open access: yes, 2005
This dissertation discusses an investigation into methods for detection and direction finding of direct-sequence spread-spectrum signals (DSSS), appropriate for a particular DSP-based direction finding platform. Relevant details on DSSS and radio direction finding are presented. These are used as the theorectical basis for the developemtn of a software-
openaire   +1 more source

Walsh-OFDM Breakdown Analysis Breaking the SNR Floor: An Analytical Study of Walsh-Coded OFDM Performance and Breakdown Mechanisms in Low-SNR Rician Fading

open access: yesIEEE Open Journal of the Communications Society
This paper analyses the performance limits and breakdown mechanisms of a Walsh-coded OFDM Integrated Sensing and Communication (ISAC) waveform operating in severe Rician fading. The waveform, previously introduced as a robust low-rate design for wearable
Ahmad Aldelemy   +5 more
doaj   +1 more source

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