Network firewalls remain the forefront defense for most computer systems. These critical devices filter traffic by comparing arriving packets to a list of rules, or security policy, in a sequential manner. Unfortunately packet filtering in this fashion can result in significant traffic delays, which is problematic for applications that require strict Quality of Service (QoS) guarantees. Further...

INTRODUCTION Policy is a key aspect of school-based efforts to prevent skin cancer. We explored the extent and accuracy of knowledge among principals and teachers in California public school districts about the elements specified in their district's written sun safety policy. METHODS The sample consisted of California public school districts that subscribed to the California School Boards Ass...

A computing policy is a sequence of rules, where each rule consists of a predicate and an action, and where each action is either “accept” or “reject”. A policy P is said to accept (or reject, respectively) a request iff the action of the first rule in P , that is matched by the request is “accept” (or “reject”, respectively). A pair of policies (P , Q) is called an accept-implication pair iff ...

BACKGROUND Currently, little is known about the types of evidence used by policy makers. This study aimed to investigate how policy makers in the health domain use and evaluate evidence and how this differs from academic epidemiologists. By having a better understanding of how policy makers select, evaluate, and use evidence, academics can tailor the way in which that evidence is produced, pote...

This paper deals with the optimal control policy of two-phase service M X / Ek /1 queues with vacation, N-policy, server break downs and balking. Generating functions method is used to derive the system characteristics. The total expected cost function is developed to determine the optimal threshold of N at a minimum cost. Numerical experiment is performed to validate the analytical results. Th...

carey and friel suggest that we turn to knowledge developed in the field of public administration, especially new public governance, to better understand the process of implementing health in all policies (hiap). in this commentary, i claim that theories from the policy studies bring a broader view of the policy process, complementary to that of new public governance. drawing on the policy stud...

This paper studies the deviations of the regret in a stochastic multi-armed bandit problem. When the total number of plays n is known beforehand by the agent, Audibert et al. (2009) exhibit a policy such that with probability at least 1− 1/n, the regret of the policy is of order logn. They have also shown that such a property is not shared by the popular ucb1 policy of Auer et al. (2002). This ...

BACKGROUND Education and policy measures within schools are valuable strategies to promote health. This study explored views of experienced food-related educators, researchers and policy-makers regarding their recommended strategies to improve Australian adolescents' knowledge of nutrition and food systems (N&FS). METHODS Semi-structured interviews were conducted with twenty-one experienc...

OBJECTIVE To study the impact of initiating antibiotic policy on antibiotic consumption in a neonatal intensive care unit (NICU). METHODS This retrospective study was conducted between January, 2013 and December, 2014 in a 30 bed NICU. The antibiotic policy for neonatal sepsis was initiated on January 1st, 2014. The overall antibiotic consumption (Daily Defined Dose [DDD] per 100 patient-days...

The authors consider Petri nets (PN’s) [3], where each transition can be prevented from firing by an external agent, the supervisor. References [5] and [6] contain necessary and sufficient conditions for the existence of a supervisory policy that enforces liveness in a PN that is not live. A PN is said to be live if it is possible to fire any transition from every reachable marking, although no...