Global connectivity cannot be guaranteed by terrestrial networks due to the lack of infrastructure in rural areas. Neither can satellite networks assure this due to lack of signal penetration and capacity coverage issues in densely populated areas. To bridge this gap, we propose an Orthogonal Frequency Domain (OFDM) based hybrid architecture where users are provided service by existing mobile n...

In this paper, we propose an effective search procedure that interleaves two steps: subproblem generation and subproblem solution. We mainly focus on the first part. It consists of a variable domain value ranking based on reduced costs. Exploiting the ranking, we generate, in a Limited Discrepancy Search tree, the most promising subproblems first. An interesting result is that reduced costs pro...

J.S. Neubauer 1 20 Annual AIAA/USU Conference on Small Satellites The vast foreseeable benefits of on-orbit servicing to current and future space systems have sparked the development of both large-scale servicing spacecraft and small-scale technology demonstration platforms. The latter provide the ability to prove certain crucial technologies more efficiently than their larger counterparts, due...

This chapter describes four systems that introduce new pedagogy, address inequities in the classroom and show improved learning with reduced cost. The first system supports inquiry and casebased learning, moving students towards more active learning, engagement, and hypothesis construction. The next system describes mathematics and geometry tutors that positively influence a student’s confidenc...

background: several studies have established that all nurses need continuing education, especially those who are working in oncology wards. in the current programs, there are just two general patterns for teaching: teacher-centered and student-centered patterns. in this study, the effect of teacher-centered (lecture) and student-centered (module) teaching methods in relation to safety standards...

let  be a graded ring and  be a graded -module. we define a topology on graded prime spectrum  of the graded -module  which is analogous to that for , and investigate several properties of the topology.

in this paper, we give a generalization of the integral dependence from rings to modules. we study the stability of the integral closure with respect to various module theoretic constructions. moreover, we introduce the notion of integral extension of a module and prove the lying over, going up and going down theorems for modules.

Optical scan voting systems are ubiquitous. Unfortunately, optical scan technology is vulnerable to failures that can result in miscounted votes and lost confidence. While manual counts may be able to detect these failures, counting all the ballots by hand is in many situations impractical and prohibitively expensive. In this paper, we present a novel approach for examining a large set of ballo...

The Busse–Heikes dynamical model is described in terms of relaxational and non-relaxational dynamics. Within this dynamical picture a diverging alternating period is calculated in a reduced dynamics given by a time-dependent Hamiltonian with decreasing energy. A mean period is calculated which results from noise stabilization of a mean energy. The consideration of spatial-dependent amplitudes l...