This paper describes a radical approach to aggressively optimize an embedded Java virtual machine interpretation in a portable way. We call this technique Semantically Enriched Code (sEc). The sEc technique can improve the speed of a JVM by orders of magnitude. The sEc technique adapts an embedded Java virtual machine to the demands of a Java application by automatically generating an enhanced ...

OBJECT The purpose of this study was to evaluate the accuracy of ventriculostomy catheter placement on a head- and hand-tracked high-resolution and high-performance virtual reality and haptic technology workstation. METHODS Seventy-eight fellows and residents performed simulated ventriculostomy catheter placement on an ImmersiveTouch system. The virtual catheter was placed into a virtual pati...

Optimal port placement and intra-operative navigation in robotically assisted minimally invasive cardiovascular surgery are essential for the improvement and success of a teleoperator based heart operation. A new system incorporating both port placement planning and intraoperative navigation was established. Offline the optimal port placement is planned on a threedimensional virtual reconstruct...

BACKGROUND We conducted a study of participants' abilities to place a laparoscopic port for in vivo biosensor use. Biosensors have physical limitations that make port placement crucial to proper data collection. A new port placement algorithm enabled evaluation of port locations, using segmented patient data in a virtual environment. METHODS Port placement scoring algorithms were integrated i...

Ambient computing promises to deliver a smooth end-user experience where computers integrated into the environment automatically and transparently support users in their daily tasks. Users must however always remain in control; balancing transparency and automation with awareness and control is the goal of the “Palpable Computing” project (http://www.ist-palcom.org). As an extension of ambient ...

The growth of intelligence-led policing has placed even greater emphasis on the clear identification of crime hotspots as well as the choice of the crime reduction or detection strategy identified to combat a problem. Crime hotspots are becoming central to policing strategy in many locations, as they enable an operational commander to focus resources into the areas of highest need. This paper o...

Virtual machines raise the abstraction level of the execution environment at the cost of restricting the set of supported languages. Moreover, the ability of a language implementation to integrate with other languages hosted on the same virtual machine typically constrains the features of the language. In this paper, we present a highly flexible yet efficient approach to hosting multiple progra...

Consolidated environments are progressively accommodating diverse and unpredictable workloads in conjunctionwith virtual desktop infrastructure and cloud computing. Unpredictableworkloads, however, aggravate the semantic gap between the virtual machine monitor and guest operating systems, leading to inefficient resource management. In particular, CPU management for virtual machines has a critic...

The main issues in a cloud based environment are security, process fail rate and performance. Fault tolerance plays a key role in ensuring high serviceability and reliability in cloud. Nowadays, demands for high fault tolerance, high serviceability and high reliability are becoming unprecedentedly strong, building a high fault tolerance, high serviceability and high reliability cloud is a criti...