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Oradea, Romania

The University of Oradea is a public University, located in Oradea, in North-Western Romania.With its 15 faculties, has a total of 123 fields of study for undergraduates and 151 post-graduate specialisation degrees. The University employs 1600 people, of which 1,080 are teaching personnel, and over 21,000 students . Wikipedia.

Secui D.C.,University of Oradea
Energy Conversion and Management | Year: 2014

In this paper a new modified artificial bee colony algorithm (MABC) is proposed to solve the economic dispatch problem by taking into account the valve-point effects, the emission pollutions and various operating constraints of the generating units. The MABC algorithm introduces a new relation to update the solutions within the search space, in order to increase the algorithm ability to avoid premature convergence and to find stable and high quality solutions. Moreover, to strengthen the MABC algorithm performance, it is endowed with a chaotic sequence generated by both a cat map and a logistic map. The MABC algorithm behavior is investigated for several combinations resulting from three generating modalities of the chaotic sequences and two selection schemes of the solutions. The performance of the MABC variants is tested on four systems having six units, thirteen units, forty units and fifty-two thermal generating units. The comparison of the results shows that the MABC variants have a better performance than the classical ABC algorithm and other optimization techniques. © 2014 Elsevier Ltd.

Cornutiu G.,University of Oradea
Neurodegenerative Diseases | Year: 2010

The prevalence of Alzheimer's disease (AD) has grown progressively over the past 100 years. The present study monitored the evolution of AD incidence in relation to several factors known as favoring it, in a county in Romania, between 1980 and 2006. The annual incidence of AD in our clinic over a period of 27 years was determined along with 17 hereditary, medical, sociodemographic and environmental parameters. The results show a relatively steady curve until 1994, followed by a doubling of the incidence with a tendency to continuous growth. During this period, none of the known pathogenic factors - medical, psychological or sociodemographic - suffered any mathematically significant transformation. The only significant change for this population was the access to industrialized and preserved food and fizzy drinks which came from the western world, immediately after the borders had opened (1989). Therefore, the cause of the increased AD incidence must be looked for in food hygiene, and we must accept the notion of an ecologically caused disease. Copyright © 2010 S. Karger AG, Basel.

Micle O.,University of Oradea
Journal of medicine and life | Year: 2012

Oxidative stress in utero-placental tissues plays an important role in the development of placental-related diseases. Maternal hiperhomocysteinemia is associated with placental mediated diseases, such as preeclampsia, spontaneous abortion and placental abruption. The aim of our study is to appreciate the clinical usefulness of the dosage serum homocysteine and malondialdehyde, as an oxidative stress marker, in the pregnancies complicated with risk of abortion or preterm birth. The study was performed at the Obstetric Gynecology Clinical Hospital Oradea from December 2009 until April 2010. It included 18 patients with risk of abortion (group 1), 22 with preterm birth (group 2). The results were compared with a control group composed by 14 healthy pregnant women. Serum homocysteine level was measured by an enzymatic method, on the instrument Hitachi 912, Roche, reagent: Axis-Shield Enzymatic. For proving the oxidative stress we established the level of malondialdehyde using a method with thiobarbituric acid TBA (Kei Satoh 1978) and the level of ceruloplasmin with the Ravin method .Also AST, ALT,CRP, iron, uric acid, urea were assessed.High level of homocysteine in both groups of study in comparison with the control group was found. The concentration of MDA was significantly higher in pregnancies complicated with risk of abortion and preterm birth compared to the control group (p=0.040, p=0.031). Considerable differences of ceruloplasmin concentration between group 1 and group 2 (p=0.045), and between group 2 and control group (p=0.034), was noticed but not any important differences between group 1 and control group (p=0.683). In women with risk of abortion or with preterm birth an oxidative stress and a hyperhomocysteinemia are present.

Alb Lupa A.,University of Oradea
Computers and Mathematics with Applications | Year: 2011

In the present paper we establish several differential superordinations regarding the new operator RDλ,αn defined by using the generalized Slgean operator Dλnf(z) and Ruscheweyh derivative Rnf(z), RDλ,αn:A→A, RDλ,αnf(z)=(1-α) Rnf(z)+αDλnf(z),z∈U, where n∈N, λ,α<0 and f∈A,A=f∈H(U):f(z)=z+∑ j=2∞ajzj,z∈U. A number of interesting consequences of some of these superordination results are discussed. Relevant connections of some of the new results obtained in this paper with those in earlier works are also provided. © 2010 Elsevier Ltd. All rights reserved.

Gal S.G.,University of Oradea
Computers and Mathematics with Applications | Year: 2011

We prove that the q-StancuFaber polynomials, q>1, attached to a compact set G⊂C and to an analytic function on G, can represent good alternatives to the partial sums of the Faber series attached to the same function and subset, both giving the geometric progression order of approximation q-n. © 2011 Elsevier Ltd. All rights reserved.

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