The study aimed to clarify the legal regulation of the volunteer employment contract in the Kingdom of Saudi Arabia, through the Saudi volunteer work law and its executive regulations.To achieve this goal, the research was divided into an introduction and three sections: The introduction dealt with the concept of volunteer work, while the first sec
Abstract To obtain improved comprehensive crashworthiness criteria for a B-type subway train, the influence laws of the vehicle design collision weight M and empty stroke D on the train’s collision responses were investigated, and multi-objective optimization and decision-making were performed to minimize TS (total compression displacement along
We study the controllability of a central spin guided by a classical field and interacting with a spin bath and show that the central spin is fully controllable independently of the number of bath spins.Additionally we Incense find that for unequal system-bath couplings even the bath becomes controllable by acting on the central spin alone.We then
In resent Tool Set year, the demand for the autonomous mobile robots which can navigate indoor environment, such as office room, warehouse, hospital has increased.Autonomous mobile robot needs some information to navigate various environment.Self position is one of the important information since the robots need to determine its any behaviors such
Rapid and precise detection of hydrogen sulfide (H2S) at trace levels is critical for industrial safety and environmental air quality monitoring, yet existing methods often struggle with cost, speed, or sensitivity.A cost-effective cavity ring-down spectroscopy (CRDS) analyzer is presented, incorporating a novel digital locking circuit for sequenti