People are very sensitive to physical events occurring around them... We know that one solid object cannot merge into another; We make decisions about the properties of objects based on the way in which they interact with each other; We judge whether objects are animate or inanimate depending on whether we perceive them as moving of their own volition, or being "caused" to move by another objec...

Radio Frequency Identification (RFID) uses wireless radio frequency technology to automatically identify tagged objects. Despite the extensive development of RFID technology, tag collisions still remains a major drawback. The collision issue can be solved by using anti-collision techniques. While existing research has focused on improving anti-collision methods alone, it is essential that the s...

Collision memory in IEEE 802.11 Distributed Coordination Function (DCF) has been detected. The collision memory can increase the physical collision rate and this effect is inherent to any DCF type of countdown. In this paper, we introduce a collision memory avoidance algorithm, called Constrained Priority Countdown Freezing (CPCF). The CPCF can completely or partially remove collision memory de...

A new collision detection algorithm is presented that solves the all-pairs collision detection problem using parallel processing. The design of the algorithm is based on a linear octree and runs in parallel with a theoretical performance of O((n log n)/k) run time. The algorithm has been implemented as a collision detection system using object-oriented design techniques and a client-server arch...

One of the most valid and efficient models of long rod projectile penetration in homogeneous targets is Tate and Alekseevskii’s (A&t) model. Based on Tate’s model, the present research tries to calculate the optimum speeds to achieve the maximum penetration depth in the homogeneous targets. The proposed collision speed-penetration depth diagrams are developed using Tate’s model. In this way, va...

The capability to avoid other air traffic is a fundamental component of the layered conflict management system ensure safe and efficient operations. evaluation systems designed mitigate risk midair collisions manned aircraft based on large-scale modeling simulation efforts quantitative volume defined as near collision. Six-degree-of-freedom rigid point mass simulations are routinely employed by...

The port waterway network plays an important role in the organization and management of ship traffic. Due to limited operations, conflicts, congestion, safety issues often arise waters. Conflicts between ships can be predicted by collision detection ships. A novel algorithm for trajectory pairs is proposed introducing variable time interval variables. In addition, improve overall accuracy compr...