Keith L. Scott

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A strategy is being developed whereby the current set of internationally standardized space data communications protocols can be incrementally evolved so that a first version of an operational "Interplanetary Internet" is feasible by the end of the decade. This paper describes its architectural concepts, discusses the current set of standard space data(More)
In this white paper, we consider the pros and cons of using the Standard Internet Suite of protocols to build the “Interplanetary Internet.” In order to do this we must consider the communication environment that underlies the Interplanetary Internet, both in the near term and into the future. Once this environment is clearly identified, we can consider its(More)
Although custodial transmission of multicast bundles would be a desirable capability to have in Delay-Tolerant Networks (DTNs), support for custodial multicast transmission was omitted from the Bundle Protocol Specification because of its complexity. This paper explains the difficulties that arise with respect to supporting custody transfer and(More)
Delay/Disruption Tolerant Networking (DTN) provides solutions to space communication challenges such as disconnections when orbiters lose line-of-sight with landers, long propagation delays over interplanetary links, and other operational constraints.<sup>12</sup> DTN is critical to enabling the future space internetworking envisioned by NASA.(More)
This paper describes the use of a transparent TCP gateway to improve the performance of applications operating in a shared secure satellite environment. Typically, a satellite gateway is installed at each end of the satellite link, and the gateways process all traffic traversing the link. With the proliferation of virtual private network (VPN) technologies,(More)
Discussing about An ad-hoc network in today’s world is like, it is an emerging technology of wireless nodes forming a network that is infrastructure less. So it can be said that without any established infrastructure. There are a lot of routing protocols for mobile ad hoc networks to have efficient routing. In this paper there are two types of networks; one(More)
OBJECTIVE Obese patients with sepsis have higher morbidity and mortality than lean counterparts, but the mechanisms involved are unknown. The authors examined the inflammatory and thrombogenic responses of the cerebral microvasculature to sepsis induced by cecal ligation and perforation in obese and lean wild-type mice. METHODS Leukocyte and platelet(More)
In this study we investigated the effect of glucose on GSK3β and β-catenin expression and the involvement of the N-linked glycosylation and hexosamine pathways in the Wnt canonical pathway in response to in vitro conditions resembling normoglycemia (5  mmol) and hyperglycemia (20  mmol) in the metastatic breast cancer-derived cell line MDA-MB-231. We also(More)