Interdomain routes change over time, and it is impressive to observe up to which extent. Routes, even the most stable, can change many times in the same day and sometimes in the same hour or minute. Such variations can be caused by several types of events, e.g., the change of the routing policies of an ISP, the reboot of a router, or the fault of a link. Some events are physiological to the net...

From operating systems and web browsers to spacecraft, many software systems maintain a log of events that provides a partial history of execution, supporting post-mortem (or post-reboot) analysis. Unfortunately, bandwidth, storage limitations, and privacy concerns limit the information content of logs, making it difficult to fully reconstruct execution from these traces. This paper presents a ...

A common approach in embedded systems to achieve fault-tolerance is to reboot the computer whenever some non-permanent error is detected. All the system code and data are recreated from scratch, and a previously established checkpoint, hopefully not corrupted, is used to restart the application data. The confidence is thus restored on the activity of the computer. The idea explored in this pape...

Virtualization is the mechanism that provides users a way to use many Operating Systems (OS) without need to reboot the system to shift one to another. If an adversary compromises any guest then virtual monitor (XEN in this context) has no reject any request from that OS. There is no formal proof that this virtual monitor provides security from them. We use virtualized system infrastructure of ...

Rannasangpei (RSNP) is used as a therapeutic agent in the treatment of cardiovascular diseases, neurological disorders, and neurodegeneration in China; however, its potential use in the treatment of vascular dementia (VD) was unclear. In this study, our aim was to examine the neuroprotective effect of RSNP in a VD rat model, which was induced by permanent bilateral common carotid artery occlusi...

This paper presents results of a failure data analysis of a LAN of Windows NT machines. Data for the study was obtained from event logs collected over a sixmonth period from the mail routing network of a commercial organization. The study focuses on characterizing causes of machine reboots. The key observations from this study are: (1) most of the problems that lead to reboots are software rela...

This paper presents Open Network Administrator (ONA), a web-based network management tool. Network administrators interact with ONA over the web, and ONA interacts with routers, switches and access points, using telnet and/or SNMP. ONA provides a common web interface to a number of different vendors’ network products, and provides granular access control, permitting network administrators acros...

We present a phase-connected timing solution for the nearby isolated neutron star RX J1308.6+2127 (RBS 1223). From dedicated Chandra observations as well as archival Chandra and XMM-Newton data spanning a period of five years, we demonstrate that the 10.31-sec pulsations are slowing down steadily at a rate of Ṗ = 1.120(3)× 10 s s. Under the assumption that this is due to magnetic dipole torques...

Any non-trivial software system has to be upgraded regularly to incorporate bug fixes and security patches or simply to keep up with the inevitable evolution in end-user requirements. Software upgrading is challenging, especially when it comes to online upgrading of running systems. In this paper, we present the current status of Gosh!, a dynamic-software-updating system for Java, which provide...