He was among a select group of Cubans who were sent to China to receive training as combat pilots and ground technicians nearly 60 years ago, and returned to form the core of post-revolutionary Cuba's air force. As one of Cuba's most successful fighter pilots, with hundreds of combat mis...
The United States Air Force (USAF) has downsized an average of 10,000 active duty personnel each year from 1990 to 2010. Despite this downsizing, the mission remains the same, which increases the workload on the remaining airmen, lowers morale, decreases specialization, changes the mindset/cultu...
The protons and neutrons within the nucleus are held together by the so-called residual strong nuclear force. The magnitude of this force is indicated by the binding energy, which is the energy required to disassemble the nucleus into its constituent protons and neutrons. The binding energy for ...
We have demonstrated a “divide and conquer” method to mediate the air film between two approaching surfaces. By using a periodic dielectrophoretic force, we effectively induce spatially controlled ruptures of the air film and suppress adverse outcomes of air interference, e.g. bubble entrapment an...
extra moment conditions are required for an equation specified in the level form of the variables. When level-equation and difference-equation are estimated simultaneously, Sys-GMM forms. Therefore, the Sys-GMM estimators are consistent and efficient both in both balanced and unbalanced panels and ar...
The high awareness of intensification and frequency of smog phenomenon all over the world in XXI age makes for detailed analyses of the reasons of its form
The ducts house motors and propellers which drive air through the ducts and thus impart a vertically directed force to the platform. The bays hold containers which are lowered from and raised into the bays with a crane that moves along tracks extended along the upper surface of the platform. ...
As the air to be purified moves through the system in the form of bubbles, the functional fluid provides interfaces for filtration and for removal of particulate matter and pollutant molecules from air. Theoretical modelling and experimental results demonstrate that the system exhibits high efficiency ...
The zigzag (ZZ) classifier is a sorting and classification device with a wide range of applications (e.g. recycling, food industry). Due to the possible variation of geometry and process settings, the apparatus is used for various windows of operation du
Environmental pollution improvements have long been a concern in academia [18,19,20]. Hao et al. [21] provided evidence that public concern about environmental pollution would force the government to take measures. The research regarding government evaluation must first consider the public’s percepti...