The Domain Name System (DNS) is a hierarchical naming system that is built on a distributed database for computers, services, or any other resource connected to the Internet or a private network. It translates the domain names meaningful to humans into the numerical identifiers associated with the networking equipment for the purpose of locating and addressing these devices worldwide [1]. The j...

We studied the fate of Nissl-stained dark neurons (N-DNs) following traumatic brain injury (TBI). N-DNs were investigated in the cerebral neocortex and the hippocampus using a rat lateral Xuid percussion injury model. Nissl stain, acid fuchsin stain and immunohistochemistry with phosphorylated extracellular signal-regulated protein kinase (pERK) antibody were used in order to assess posttraumat...

In this research, hydrodynamics of the Bubble Train Flows (BTF) in circular capillaries has been investigated by Direct Numerical Simulation (DNS).The Volume of Fluid Based (VOF) interface tracking method and streamwise direction periodic boundary conditions has been applied. The results show that there exists an appropriate agreement between DNS and experimental correlation results. The re...

Given that the global DNS system, especially at the higher root and top-levels, experiences significant query loads, we seek to answer the following questions: (1) How does the choice of DNS caching software for local resolvers affect query load at the higher levels? (2) How do DNS caching implementations spread the query load among a set of higher level DNS servers? To answer these questions w...

DNS implementers face numerous choices in architecting DNS resolvers, each with profound implications for security. Absent the use of DNSSEC, there are numerous interim techniques to improve DNS forgery resistance. We explore how different resolver architectures can affect the risk of DNS poisoning. The contributions of this work include: (A) We create a comprehensive, accurate model of DNS poi...

Domain Name System (DNS) traffic has become a rich source of information from a security perspective. However, the volume of DNS traffic has been skyrocketing, such that security analyzers experience difficulties in collecting, retrieving, and analyzing the DNS traffic in response to modern Internet threats. More precisely, much of the research relating to DNS has been negatively affected by th...

Cambridge Hospital at Home (CH@H) provides 24-h nursing in a patient's own home to patients requiring terminal and palliative respite care. To investigate views of the service, we surveyed all GPs and district nurses (DNs) in the catchment area of the scheme. Responses were received from 85% of DNs and 65% of GPs. The majority of DNs (93%) and GPs (57%) had patients referred to CH@H, whereas 90...

The Domain Name System (DNS) has been the naming service of the Internet for more than 20 years. It is the foundation of virtually all other distributed service. The deficiencies of DNS with respect to performance, availability, and reliability are well known. We want to systematically improve DNS by (1) measuring DNS performance, (2) evaluating past proposals, and (3) try to come up with a new...

We design DNS-sly, a counter-censorship system which enables a covert channel between a DNS client and server. To achieve covertness and deniability in the upstream direction, DNS-sly applies user personalization, adapting to individual behaviors. In the downstream direction, it utilizes CDN-related DNS responses to embed data, while retaining statistical covertness. We show DNS-sly achieves do...