Results 1 to 10 of about 443,693 (235)

Associations of environment and lifestyle factors with suboptimal health status: a population-based cross-sectional study in urban China

open access: yesGlobalization and Health, 2021
Introduction Suboptimal health status (SHS), an intermediate state between chronic disease and health, is characterized by chronic fatigue, non-specific pain, headaches, dizziness, anxiety, depression, and functional system disorders with a high ...
Yunlian Xue   +8 more
doaj   +1 more source

Static Grid Equivalent Models Based on Artificial Neural Networks

open access: yesIEEE Access, 2021
Power systems are rapidly and significantly changing due to the increasing penetration of distributed energy resources (DERs) and the rapid growth of widespread grid interconnections.
Zheng Liu   +3 more
doaj   +1 more source

Extended Nodal Admittance Matrix Based Stability Analysis of HVDC Connected AC Grids

open access: yesIEEE Access, 2022
Motivated by emerging HVDC oscillation issues resulted from the interaction with AC grids, impedance-based stability analysis has become an attractive approach in the de-risking studies due to the capability of black-box modelling and clear physical ...
Yonggang Zhang   +3 more
doaj   +1 more source

COMPARATIVE STUDY ON CHINESE LIVE BROADCASTING INFLUENCE UNDER EPIDEMIC [PDF]

open access: yesMalaysian E Commerce Journal, 2020
Under the impact of the new coronavirus epidemic, 2020 will become the most popular year for live streaming influence. This year, various industries, platforms and brands began to sell their products in the form of live broadcast influence.
Qin Lv
doaj   +1 more source

A Modular Framework for the Life Cycle Based Evaluation of Aircraft Technologies, Maintenance Strategies, and Operational Decision Making Using Discrete Event Simulation

open access: yesAerospace, 2021
Current practices for investment and technology decision making in aeronautics largely rely on regression-based cost estimation methods. Although quick to implement and easy to use, they suffer from a variety of limitations, both in temporal space and ...
Ahmad Ali Pohya   +3 more
doaj   +1 more source

A Study on University Students' Stress Levels during the COVID-19 Pandemic

open access: yesJournal of Extension Education, 2022
The current study assessed the stress levels of students of Kerala Agricultural University during the COVID-19 pandemic. The sample size was 200. Twenty-four variables were taken for the study which revealed that majority of the students was in a ...
Deepak I P, K N Ushadevi
doaj   +1 more source

The concept of operation and production control

open access: yesProduction Engineering Archives, 2021
The theoretical aim of the paper is to analyses the main function and concept of production control in operation management. The empirical aim of the paper is to investigate polish production firm opinion about factors affecting production planning and ...
Wolniak Radosław
doaj   +1 more source

Public Sector Shared Services and the Lean Methodology: Implications on Military Organizations

open access: yesJournal of Open Innovation: Technology, Market and Complexity, 2020
During the economic and financial crisis, private and public organizations were subject to a constant reduction in costs and resources. Public shared service models felt compelled to adopt the Lean methodology with the aim of reducing costs, reducing ...
Renato Costa   +4 more
doaj   +1 more source

Seismic Deformation Response Analysis of Shallow Buried Section at the Entrance and Exit of River Crossing Tunnel [PDF]

open access: yesE3S Web of Conferences
Ensuring the safety of tunnel structures in unique underwater environments is of paramount importance. This study focuses on the entrance section of a river-crossing tunnel, characterized by shallow burial depths with significant variations.
Lu Jian   +4 more
doaj   +1 more source

Developing a smart factory framework a case of ceramic tile manufacturing

open access: yesTạp chí Khoa học và Công nghệ, 2023
This research paper presents a framework for smart factory applications in ceramic manufacturing, harnessing data collection and machine learning algorithms to seamlessly align with the demands of Industry 4.0 and facilitate digital transformation.
Tran Le Vi Nhan Tam   +3 more
doaj   +1 more source

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