Cold conditions are in principle advantageous, because they mean longer observation and interaction times. With cold conditions some fundamental studies can be done with molecules: high precision spectroscopy, cold molecule–molecule collisions, cold chemistry and molecular Bose-Einstein condensation. Laser cooling is very successful with atoms. The deceleration principle can be described very s...

Traffic oscillation, stop and go traffic, is created by different reasons such as: sudden speed drop of leader vehicle. Stop and go traffic commonly is observed in congested freeways results in traffic oscillation. Many theories had been presented to define congestion traffic based on laws of physics such as: thermodynamics and fluid. But, these theories could not explain the complexity of driv...

background: early diagnosis of left ventricular mass (lvm) inappropriateness and left ventricular hypertrophy   (lvh) can result in preventing diastolic left ventricular dysfunction and its related morbidity and mortality. this study was performed to determine if diastolic dysfunction   is associated with lvh and inappropriate lvm. methods: one hundred   and twenty five uncomplicated hypertensi...

RAPID DECELERATION IS SEEN IN A WIDE VARIETY OF SPORTS WHEN STOPPING OR AS A PRECURSOR TO A CHANGE IN DIRECTION. THESE RAPID CHANGES IN VELOCITY OFTEN OCCUR OVER A MINIMAL AMOUNT OF DISTANCE OR TIME AND ARE OFTEN IN RESPONSE TO EXTERNAL STIMULI SUCH AS AN OPPONENT’S MOVEMENT OR BOUNDARY LINES. LITTLE ATTENTION HAS BEEN GIVEN IN THE RESEARCH LITERATURE TO THE KINEMATICS AND KINETICS OF RUNNING D...

In the framework of focused transport theory, adiabatic deceleration arises from adiabatic focusing in the solar wind frame and from differential solar wind convection. An explicit formula is given for the deceleration of individual particles as a function of the pitch angle. Deceleration and other first-order effects of the solar wind, including convection, are incorporated into a numerical co...

Reducing start and stop time without destroying the pavement surface is important in enhancing productivity of double-drum roller and compact quality of asphalt pavement, but it is difficult in confirming the maximum brake deceleration or start acceleration of double-drum roller. Dynamic analysis is used in studying these questions, and a mathematic model of double-drum roller is established, b...

Many techniques for the acceleration and deceleration of industrial robots and computer numerical control (CNC) machine tools have been proposed in order to make industrial robots and CNC machine tools perform given tasks efficiently. Although the techniques selecting polynomial functions can generate various acceleration and deceleration characteristics, the major problem is the computational ...

BACKGROUND Decreased vagal activity after myocardial infarction results in reduced heart-rate variability and increased risk of death. To distinguish between vagal and sympathetic factors that affect heart-rate variability, we used a signal-processing algorithm to separately characterise deceleration and acceleration of heart rate. We postulated that diminished deceleration-related modulation o...