In this paper we study the dynamics of a vector-transmitted disease using two deterministic models. First, we look at time dependent prevention and treatment efforts, where optimal control theory is applied. Using analytical and numerical techniques, it is shown that there are cost effective control efforts for treatment of hosts and prevention of host-vector contacts. Then, we considered the a...

Increasing attention is being given to the issue of desistance or cessation in adult criminal careers. We contribute to this research by considering how informal and formal social controls affect recidivism among 556 sex offenders placed on probation in 1992. We conduct an event history analysis of reoffense, based on the predictions of Sampson and Laub's and Gottfredson and Hirschi's control t...

This work presents a novel control approach for allocating a robotic swarm among boundaries. It represents the first step toward developing a methodology for encounter-based swarm allocation that incorporates rigorously characterized spatial effects in the system without requiring analytical expressions for encounter rates. Our approach utilizes a macroscopic model of the swarm population dynam...

Applications and services in distributed environments are an increasingly important topic. Hence approaches to security issues in such applications are also becoming essential. Crucial information is needed to be protected properly and mechanisms must be developed for this protection. Access control is one of the topics that underline security problems. It concerns assuring that data or resourc...

Since the number of compromised computers, or botnet, continues to grow, the cyber security problem has become increasingly important and challenging to both academic researchers and industry practitioners. A respect to combat botnet propagation is to understand the attacker’s behaviors based on the whole operation of a system that can be modeled with population models used in epidemiological s...

Epidemic outbreaks in human populations are facilitated by the underlying transportation network. We consider strategies for containing a viral spreading process by optimally allocating a limited budget to three types of protection resources: (i) Traffic control resources, (ii), preventative resources and (iii) corrective resources. Traffic control resources are employed to impose restrictions ...

We consider uplink power control for lognormal fading channels in the large population case. First, we examine the structure of the control law in a centralized stochastic optimal control setup. We analyze the effect of large populations on the individual control inputs. Next, we split the centralized cost to approach the problem in a game theoretic framework. In this context, we introduce an a...

Background: Androgenetic alopecia (AGA) is the most prevailing type of progressive hair loss. Thus far, some previous studies have investigated the correlation between AGA and metabolicsyndrome (MetS). However, due to the inconsistency of their results, our study aims at evaluating the association between AGA and MetS.Methods: Fifty two male patient...