This paper presents an architecture and implementation of a selfhealing sandbox for the execution of third party code dynamically loaded which may potentially put in risk application stability. By executing code in a fault contained sandbox, no faults are propagated to the trusted part of the application. The sandbox is monitored by a control loop that is able to predict and avoid known types o...

We address the problem of establishing a group key amongst a dynamic group of users over an unreliable, or lossy, network. We term our key distribution mechanisms self-healing because users are capable of recovering lost group keys on their own, without requesting additional transmissions from the group manager, thus cutting back on network traffic, decreasing the load on the group manager, and...

Designing routing schemes is a multidimensional and complex task that depends on the objective function, the computational model (centralized vs. distributed), and the amount of uncertainty (online vs. offline). Nevertheless, there are quite a few well-studied general techniques, for a large variety of network problems. In contrast, in our view, practical techniques for designing robust routing...

Due to its low tensile strength and the presence of defects brought on by improper construction methods or other factors, cracks in concrete are practically inevitable. For reinforced-concrete structures, even if do not necessarily increase risk collapse, they unquestionably hinder aspects such as service life. Self-healing cementitious materials have been developed because growing concern for ...

Lost circulation is a common and complex downhole accident in the process of oil gas drilling. Traditional bridge plugging material has limitation poor adaptability to lost formations. Therefore, this study synthesized new self-healing improve success rate; specifically, hydrophobic association polymer lauryl methlacrylate-acrylamide-acrylic acid containing Fe3+ was modified via curdlan form co...

The concept of self-healing concrete is becoming more necessary as sustainability in construction desirable. Amongst the current solutions this technology are autogenous, chemical, and bacterial self-healing. It paramount that secondary raw materials be used production selfhealing a form sustainable solution. Therefore, paper, admixture “Betocrete-CP-360-WP”, which crystallizing waterproofing w...

Self-healing materials are a class of smart materials that have the structurally incorporated ability to repair damage caused by mechanical usage over time. The inspiration comes from biological systems, which have the ability to heal after being wounded. Initiation of cracks and other types of damage on a microscopic level has been shown to change thermal, electrical, and acoustic properties, ...

The development of complex software systems is more and more based on the composition and integration of autonomous component systems. This can be done either statically (proactive approach) at development-time or dynamically through a reactive approach in which a new composite system can possibly be created on-demand and/or at run-time from existing systems. With the aim of constructing and ma...

Mission critical manufactory and enterprise IT infrastructure and on-line Internet services require 24x7 availability and usually have an agreed Service Level Agreements (SLA) around its services offering. Currently, most enterprise and manufactory IT datacenters experience severe problems managing the large N tier, networked environments that these mission critical systems run on. Most of thes...

The introduction of SONET technology opens o p portunities for survivable network architectures, such as selfhealing rings, which can improve telecommunication reliability. This paper presents an algorithm for routing fiber around a ring in a network, when the network nodes, links, connectivity, and which offices are to be placed on that ring together are known. The algorithm aids automated sur...