Results 31 to 40 of about 189,925 (269)

Vision-Based Fuzzy 2D Motion Control of a Model Helicopter [PDF]

, 2006
©2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or distribution to servers or lists, or to reuse any ...
Demirli, K., Gholami, Behnood, Tadayoni, S. A.   +2 more
core   +1 more source

Guiding Healthcare Organizations in Strategic Pathways: Assessing a Dynamic Adaptive Model

The International Journal of Health Planning and Management, EarlyView.
ABSTRACT In an era of increasing uncertainty and complexity, healthcare decision makers must navigate dynamic environments with greater awareness and adaptability. This study assesses what the impact is of the Dynamic Adaptive Decision Support model (DADS) on stewarding capacity by fostering adaptability, resilience, and strategic foresight.
Anke Aarninkhof‐Kamphuis, Hans Voordijk, Geert Dewulf   +2 more
wiley   +1 more source

An Efficient Method for Rotor Aeroacoustic Calculation Accounting for Rotor Downwash Influence

Aerospace
Based on the Ffowcs Williams–Hawkings equations and the computational fluid dynamics method, the rotor’s aeroacoustic characteristics, considering the influence of the downwash flowfield on the sound propagation process, are calculated and analyzed ...
Bo Wang, Xuan Gao, Wei Bian, Xi Chen, Qijun Zhao   +4 more
doaj   +1 more source

Numerical Study on Aerodynamic and Noise Responses of Rotor with Ramp Increase in Collective Pitch Based on Time-Accurate Free-Wake Method

Machines, 2023
Research on helicopter transient maneuvering flight noise is a hotspot and challenging topic in the fields of helicopter design and application. A new time-accurate free-wake (TAFW) method and the Fowcs Williams-Hawkings (FW–H) equations are applied to ...
Zhiyuan Hu, Runze Xia, Yongjie Shi, Guohua Xu   +3 more
doaj   +1 more source

Investigation of a Compound Helicopter Flying the Depart and Abort Mission Task Element [PDF]

, 2017
The next generation of rotorcraft will have to satisfy the appropriate handling qualities requirements before entering service. Many of these vehicles will operate at significantly greater speeds than the conventional helicopter and will therefore have
Anderson, Dave, Ferguson, Kevin, Thomson, Douglas   +2 more
core  

Numerical modelling of the aerodynamic interference between helicopter and ground obstacles [PDF]

, 2017
Helicopters are frequently operating in confined areas where the complex flow fields that develop in windy conditions may result in dangerous situations.
Barakos, George N., Chirico, Giulia, Szubert, Damien, Vigevano, Luigi   +3 more
core   +1 more source

Abdominal POCUS Education for Clinicians: A Systematic Review of Teaching Methods for Point‐of‐Care Abdominal Ultrasonography

Journal of Clinical Ultrasound, Volume 53, Issue 3, Page 547-561, March/April 2025.
For patients to benefit from abdominal point‐of‐care ultrasound, the ultrasound examinator must be sufficiently trained. In this systematic review, we identified advantages and disadvantages of different training methods and approaches. We conclude that thoughtful integration of the various educational methods is crucial for stakeholders and educators.
Birkir Örn Sveinsson, Olof Kristin Thorsteinsdottir, Alexander G. P. Browne, Benjamin S. B. Rasmussen, Anders Bo Nielsen, Pia Iben Pietersen   +5 more
wiley   +1 more source

Characteristics of Shock Wave/Boundary Layer Interactions on Rotor Airfoils

Nanjing Hangkong Hangtian Daxue Xuebao
Utilizing the Reynolds‑averaged Navier‑Stokes （RANS） method in conjunction with a locally variable γ‑Rẽθt transition model， an in‑depth investigation is conducted on the characteristics of shock wave/boundary layer interaction （SWBLI） for the rotor ...
YANG Liuqing, ZHAO Guoqing, WANG Qing, JING Simeng, MA Li, ZHAO Qijun   +5 more
doaj   +1 more source

Grinding Characteristics of MoS2-Coated Brazed CBN Grinding Wheels in Dry Grinding of Titanium Alloy

Chinese Journal of Mechanical Engineering, 2023
As an important green manufacturing process, dry grinding has problems such as high grinding temperature and insufficient cooling capacity. Aiming at the problems of sticking and burns in dry grinding of titanium alloys, grinding performance evaluation ...
Junshuai Zhao, Biao Zhao, Wenfeng Ding, Bangfu Wu, Ming Han, Jiuhua Xu, Guoliang Liu   +6 more
doaj   +1 more source

Evaluating the Role of Analogies in Biochemistry Education: Lessons Learned From Pre‐ and Post‐Pandemic Dental Student Perceptions

Journal of Dental Education, EarlyView.
ABSTRACT Biochemistry forms the foundation for understanding biomolecules and molecular processes crucial to dental and oral biology. However, it is often perceived as a challenging subject for dental students with diverse educational backgrounds. Analogies are a pedagogical tool that helps explain new and abstract concepts in biochemistry.
Ulysses Tsz Fung Lam, Yun Chau Long
wiley   +1 more source