These findings strongly support the use ofVR integrated training in the welding industry.

No abstract

Three dimensional (3D) television (TV) is an emerging technology that has not yet been evaluated for its effects on depth perception. Further, due to its importance in physical performance as well as academic performance it is imperative to do so. This study looks to evaluate the effects of 3D displays on depth perception. In order to do this, two distinct methods were used. The first uses a traditional method of measuring depth perception, the Randot Sterotest. The second method uses two practical depth perception tests. The Randot Sterotest showed significant degradation (P = 0.0071) as did one of the practical tests (P = 0.032). This indicates there is an effect on depth perception; however, due to the conflicting practical tests more research is needed to determine if the effect it has can lead to serious performance issues.

Many embedded devices used to control critical infrastructure assets are based on the Harvard architecture. This architecture separates data and program memory into independent address spaces, unlike the von Neumann architecture, which uses a single address space for data and program code. Buffer overflow attacks in desktop and server platforms based on the von Neumann model have been studied extensively. However, buffer overflows in Harvard architectures have only just begun to receive attention. This paper demonstrates that stack-based buffer overflow vulnerabilities exist in embedded devices based on the Harvard architecture and that the vulnerabilities are easily exploited. The paper shows how the reversal in the direction of stack growth simplifies attacks by providing easier access to critical execution controls. Also, the paper examines defense techniques used in server and desktop systems and discusses their applicability to Harvard class machines.

No abstract