Results 91 to 100 of about 14,424 (285)
Characterising Vento Norte Downslope Windstorms and Their Thermal Impacts in Southern Brazil
International Journal of Climatology, EarlyView.Using 20 years of hourly INMET observations in Santa Maria (southern Brazil), we identify 189 Vento Norte (VNOR) downslope windstorms, ~72% in winter, marked by abrupt warming, drying and strong northerly gusts. Across five biometeorological indices (TEFW, TDI, THI, HDI, Humidex), VNOR hours consistently show significantly higher thermal discomfort ...
Cinara Ewerling da Rosa +5 more
wiley +1 more source
Elevator dynamic monitoring and early warning system based on machine learning algorithm
IET Networks, EarlyView., 2022 In order to monitor and warn the elevator dynamics, in this work, the machine learning algorithm is introduced, and the particle swarm algorithm is used to perfect the model. The model is optimised, and the experimental comparison shows that the optimisation of the model parameters can further improve the accuracy of the elevator load prediction. Then,
Shuai Zhang, Qiangguo Yin, Jinlong Wang
wiley +1 more source
EURASIP Journal on Wireless Communications and Networking, 2006 Generic ultra-wideband (UWB) spread-spectrum system performance is evaluated in centralized and distributed spatial topologies comprising square-shaped indoor cells.
Pirinen Pekka
doaj +2 more sources
Performance analysis of physical layer security based on channel correlation
Tongxin xuebao, 2021 In view of the correlation of the main and eavesdropper’s channels in physical layer security, the impact of channel correlation on the secrecy performance was studied, the exact form ulations of ergodic secrecy capacity and secrecy outage probability ...
Xuanli WU +3 more
doaj +2 more sources
Mobile WiMAX system performance – simulated versus experimental results [PDF]
, 2008 This paper addresses the downlink performance of mobile WiMAX operating at 2.3GHz in an urban environment. The analysis includes a comparison of simulated and experimental results.
Nix, AR +5 more
core +1 more source
Institutional Fragility and E‐Business Adoption: A Study of SMEs in a Conflict‐Affected Economy
Strategic Change, EarlyView.ABSTRACT This study examines e‐business adoption among SMEs in Yemen, a conflict‐affected and institutionally fragile economy. Drawing on a mixed‐methods design, it combines Partial Least Squares Structural Equation Modelling (PLS‐SEM) with qualitative interviews to analyse how war and firm size moderate the effects of key adoption drivers and barriers.
Ahmed Abdullah +5 more
wiley +1 more source
Outage performance of multi-RIS-assisted NOMA system with imperfect serial interference cancellation
物联网学报Considering the practical communication environments, the outage performance and the throughput were investigated for multiple reconfigurable intelligent surfaces (RIS) assisted non-orthogonal multiple access (NOMA) system with imperfect serial ...
Jiaqing QIN, Liping LUO, Jing ZHOU
doaj +2 more sources
The Application of Telemedicine in Surgery
Med Research, EarlyView.This figure provides an overview of the content presented in this article. Telemedicine is integrated throughout the entire surgical workflow, with distinct applications across the preoperative, intraoperative, and postoperative phases. These applications are enabled by a suite of supporting technologies, while the associated implementation challenges ...
Yufan Yang +8 more
wiley +1 more source
WLAN/WDS performance using directive antennas in highly mobile scenarios: experimental results [PDF]
, 2008 This paper presents experimental results from a series of IEEE 802.11g studies to investigate the performance of vehicular to roadside wireless communications. In particular, two high-gain omni-directional antennas were used at the roadside access point,
Nix, AR +3 more
core +1 more source
Stabilising Routines in Complex Emergencies: How Basic Service Continuity Shapes Perceived Security
Public Administration and Development, EarlyView.ABSTRACT This study examines how locally embedded actors describe the relationship between basic service continuity and perceived security in complex emergencies, with particular attention to the stabilisation of everyday routines. Using Proximity‐Predictability‐Attributability (PPA) as an analytic lens, we trace how interviewees relate access to water,
Abdullah Gökhan Yaşa, Orçun İmga
wiley +1 more source