Let H denote the set {f1, f2, ..., fn}, 2 the collection of all subsets of H and F ⊆ 2 be a family. The maximum of |F| is studied if any k subsets have a non-empty intersection and the intersection of any l distinct subsets (1 ≤ k < l) is empty. This problem is reduced to a covering problem. If we have the conditions that any two subsets have a non-empty intersection and the intersection of any...

conclusions internet gaming addiction may cause severe personal, social, and occupational problems. despite the range of severity and various presentations of this disorder, dsm-5 lacks the severity classifier. early identification and management may result in complete recovery. case presentation we reported a case of two brothers, diagnosed with internet gaming addiction, who showed grossly di...

We use reformulation techniques to model and solve a complex sphere covering problem occurring in the configuration of a gamma ray machine radiotherapy equipment unit.

Background: Caring is the essence of nursing practice, but has been understood in various countries in a different way. Analysis of nurses’ perception of caring behaviors provides the possibility to nursing teachers and administrators to be able to plan a program to meet all the patients’ needs with an inclusive view. Aim: to determine nurses’ perception about caring behaviors and the factors t...

To compare the Scheduled Caste (SC) & Scheduled Tribe (ST) students with general students regarding their school and family background, personality profile and personal problems, a stratified systematic sample of 261 medical students was taken who filled up their individual set of questionnaires consisting of semistructured sociodemographic proforma, Personality Trait Inventory (PTI) and Studen...

Mentors and protégés from two formal mentoring programs were interviewed about the benefits associated with program participation, problems encountered in the program, and recommendations for program improvements. The most commonly reported benefits for protégés included learning, coaching, career planning, and psychosocial support. Mentors most frequently reported learning, developing a person...

Convergence stagnation is the chief difficulty to solve hard optimization problems for most particle swarm optimization variants. To address this issue, a novel particle swarm optimization using multi-information characteristics of all personal-best information is developed in our research. In the modified algorithm, two positions are defined by personal-best positions and an improved cognition...

Background: Nowadays, gamete and embryo donation is applied as effective process in treatment infertility problems. In order to participate in the process of donation, donors should complete an extensive questionnaire that details their personal and family medical history. Included in this questionnaire should be a detailed sexual history, substance abuse history, history of family disease, and...