In this paper the problem of minimum cost communication network design is considered where the costs are piecewise linear concave. Several methods are compared: Simulated Annealing method, a heuristic based on the method proposed by Minoux, and a lagrangian method based on lower bounding procedure.

This paper investigates a new property of formal languages called \(\mathrm {REG}\)-measurability where {REG}\) is the class regular languages. Intuitively, language \(L\) {REG}\)-measurable if there exists an infinite sequence that “converges” to \(L\). A without has complex shape in some sense so it can not be (asymptotically) approximated by We show several context-free are (including with t...

Prof. Massimo Cocchi, one of the most experienced scientists in nutritional biochemistry, past and honorary President Italian Society for Experimental Biology (Società Italiana di Biologia Sperimentale), passed away on May 19th, 2022, his house San Lazzaro Savena (Bologna). He was a man highest value both from scientific human point view. landmark lot students, as well friends colleagues who al...

BACKGROUND In Nigeria, women too often suffer the consequences of serious obstetric complications that may lead to death. Delay in seeking care (phase I delay) is a recognized contributor to adverse pregnancy outcomes. This qualitative study aimed to describe the health care seeking practices in pregnancy, as well as the socio-cultural factors that influence these actions. METHODS The study w...

introduction: cost estimation is a important tool which assist the managers to plan and to control the economic functions of the organization. the present study aims to identify the cost of a cesarean surgery in one of the first class public hospitals in iran. methodology: reviewing all expenses of the hospital documents in the financial unit, the cost of a cesarean surgery was determined throu...

This paper presents an evolutionary grey-box model identification methodology that makes the best use of a-priori knowledge on a clear-box model with a global structural representation of the physical system under study, whilst incorporating accurate black-box models for immeasurable and local nonlinearities of a practical system. The evolutionary technique is applied to building dominant struc...

Potentially immeasurable heterodimer combinations of human G-protein-coupled receptors (GPCRs) result in a great deal of physiological diversity and provide a new opportunity for drug discovery. However, due to the existence of numerous combinations, the sets of GPCR dimers are almost entirely unknown and thus their dominant roles are still poorly understood. Thus, the identification of GPCR di...

The present study aimed to describe and analyze the career of Edith Magalhães Fraenkel and her important legacy to Brazilian nursing. The methodology chosen was a documentary analysis of her areas of participation based on documents of the Historical Cultural Center of Iberian-American School of Nursing of the University of São Paulo (Universidade de São Paulo, USP) and in the Rectory of the sa...