Results 11 to 20 of about 555,024 (332)

Weapon performance drives weapon evolution

open access: yesProceedings of the Royal Society B: Biological Sciences, 2021
Many sexually selected traits function as weapons, and these weapons can be incredibly diverse. However, the factors underlying weapon diversity among species remain poorly understood, and a fundamental hypothesis to explain this diversity remains untested. Although weapons can serve multiple functions, an undeniably important function is their role in
Zachary Emberts   +2 more
openaire   +3 more sources

Research on Lateral Maneuverability of a Supercavitating Vehicle Based on RBFNN Adaptive Sliding Mode Control with Rolling Restriction and Planing Force Avoidance

open access: yesMachines, 2023
This paper addresses the lateral motion control of a supercavitating vehicle and studies its ability to maneuver. According to the unique hydrodynamic characteristics of the supercavitating vehicle, highly coupled nonlinear 6-degree-of-freedom (DOF ...
Guang Yang, Faxing Lu, Junfei Xu
doaj   +1 more source

A study of lost military words and terms from dictionaries based on Adab-al-Harb va Al-shaja’ah (types of arrowheads and Maces) [PDF]

open access: yesنثرپژوهی ادب فارسی, 2022
Despite the writing of various dictionaries in the Persian language, there are still many Persian words that have been overlooked by lexicographers or some forms of them have not been recorded.
Hossein Aligholizadeh, Hamid Pooladi
doaj   +1 more source

Energy balance model to assess the resistance of ballistic protection materials

open access: yesDefence Technology, 2023
NATO standards ''AEP-2920 Procedures for the Evaluation and Classification of Personal Armor'' and NIJ Standard – 0101.06, indicate the method to statistically assess the resistance of personal ballistic protection materials. To be validated and accepted
Bogdan Stirbu   +3 more
doaj   +1 more source

Low Frequency Anti-Interference Mechanism of Axial Stretching Fiber Laser Hydrophones

open access: yesPhotonics, 2022
For the axial stretching fiber laser hydrophone, a fiber laser is often exposed to flexural interference. A theoretical model for the flexural vibration of a fiber laser was therefore constructed in this paper to explore the low frequency anti ...
Wenzhang Song   +7 more
doaj   +1 more source

Reliability Analysis and Optimization Method of a Mechanical System Based on the Response Surface Method and Sensitivity Analysis Method

open access: yesActuators, 2023
Mechanical system reliability analysis constitutes a primary research focus in the field of engineering. This study aims to address the issue of complex mechanical systems with intricate mechanisms and nonlinear reliability equations that are challenging
Lei Zhao   +3 more
doaj   +1 more source

An OFDM-Based Frequency Domain Equalization Algorithm for Underwater Acoustic Communication with a High Channel Utilization Rate

open access: yesJournal of Marine Science and Engineering, 2023
The underwater acoustic communication technique for high-speed and highly reliable information transmission in the ocean has been one of the popular research focuses facing the fast-growing information technology sector and the accelerating development ...
Chengxu Feng   +3 more
doaj   +1 more source

Magnetic detection of underdriven USV track adaptive tracking in complex marine environment control algorithm research

open access: yesAIP Advances, 2023
In marine magnetic detection, in order to improve the accuracy of the measurement data of the field, to consider the impact of the storm interference environment, and to design a weakly driven USV tracking control system, it is necessary to drive the USV
Yi Li, Zhongle Liu, Wudi Wen
doaj   +1 more source

Securities Regulation: Shareholder Derivative Actions Against Insiders Under Rule 10b-5 [PDF]

open access: yes, 1966
After a general examination of Rule 10b-5 in the context of its traditional application, this comment focuses on the recent developments concerning the rule\u27s function as a weapon for the enforcement of controlling insiders\u27 duties to their ...
Caidahl, Kenneth   +4 more
core   +4 more sources

The Design and Development of a Ship Trajectory Data Management and Analysis System Based on AIS

open access: yesSensors, 2021
To address the data storage, management, analysis, and mining of ship targets, the object-oriented method was employed to design the overall structure and functional modules of a ship trajectory data management and analysis system (STDMAS).
Chengxu Feng   +3 more
doaj   +1 more source

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