Introduction: Chronic dermatitis is a major sociomedical issue still being marginalized due to generally accepted view that skin diseases are less of a health problem than is the case with diseases of other organs and organ systems for they are not life-threatening. Measurement of quality of life of persons suffering from psoriasis could become an important factor in assessing the success of treatment and modern aspect of integration of the diseased into the planning of therapeutic procedures, monitoring of their outcomes and improving the quality of treatment. Aim: To determine the quality of life and the degree of depression of persons with psoriasis, as well as to make a correlation between the two. Patients and methods: A descriptive and analytical study of cross-sectional character has been performed. The sample consisted of N = 56 respondents with medically verified diagnosis of psoriasis that was treated at the Clinic for Skin and Venereal Diseases of the Clinical Centre of the University of Sarajevo. Criteria for involvement of participants: respondents are to be over 18 years of age with verified medical diagnosis of psoriasis, and to voluntarily consent for inclusion in the research. The research instruments consisted of standardized questionnaires: the WHO-BREF Quality Questionnaire and the Beck Depression Inventory. Results: Median value of scores relating to quality of life of persons with psoriasis from our sample was highest in the domain of social interaction and amounted to 72 (51.50-81.00); the domain of physical health was 63 (39.50-75.00); the psychological condition was 63 (44.00-75.00); and the environmental domain was 63 (44.00-73.50). Depression of persons with psoriasis showed correlation with domains of quality of life. The depression proved correlated with the respondents’: physical health (rho = -0.793 p = 0.0001); psychological health (rho = -0.842 p = 0.0001); social interactions (rho = -0.598 p = 0.0001); as well as with attitude towards the environment (rho = -0.709 p = 0.0001). Gender, age, education, marital or employment status did not prove statistically significant for influencing occurrence of the depression. Conclusion: Given that median scores of all four domains of the quality of life of persons suffering from psoriasis were in the higher half of classification scale, the quality of their life can be considered as satisfactory. The degree of depression and the domain of quality of life are in negative correlation with psoriasis.

In this paper a method to control the output current of a three-phase grid connected two-level converter is presented. The current control approach is a finite control set model predictive control with sphere decoding. Sphere decoding algorithm gives a computationally efficient solution of the problem for long horizons. The goal of the control algorithm is to minimize the grid current tracking error and switching frequency. These goals are met with the choice of the appropriate cost function. Simulations are carried out in order to investigate the proposed current control approach. The influence of control parameters on the control objectives is investigated through simulations.

Resumo O desenvolvimento de impressoras 3D permitiu uma maior produção de peças e próteses médicas provenientes de polímeros termoplásticos como PLA e ABS, para produção de filamentos. Este trabalho avaliou as características mecânicas de próteses impressas, em determinada temperatura, de filamento PLA. Foram impressos diversos corpos de provas, para a realização de testes de tração, verificando que a configuração com densidade 100%, espessura de 0,4 mm e direção de impressão de 45° e 135° apresentou melhor resultado de resistência mecânica. Realizaram-se também, simulações matemáticas para análise de resistência à queda e flambagem. O conjunto de testes físicos e matemáticos determinou que o PLA não atendeu os requisitos para aplicação deste como próteses. Palavras-chave: PLA, polímero, impressora 3D, próteses.

Article history: Received 23 June 2017 Received in revised form 3 August 2017 Accepted 5 August 2017 Irregularly shaped rigid bodies, which move with high velocity through a resistive medium, take specific stable orientations during the motion. The paper shows physical models for estimation of the center of pressure for irregularly shaped bodies and for assessing the dynamic stability of such bodies. Using the developed physical models and the results of numerical simulations for the body of an irregular shape (a geometry similar to the fragments of high explosive projectile), a center of pressure and stability analysis was performed for the given body. It has been shown, based on rotation about one axis, that there is a zone of stability for the body in certain orientations, but to determine it more precisely it is necessary to continuously change two angles about two mutually perpendicular axes that perpendicular to the velocity vector of the center of mass. Generally, for each body, there is an orientation in which the body is in a stable zone (oscillation around the center of mass), but it is difficult to find that zone since one has to perform an extremely large number of numerical simulations for each body of a different shape.

Introduction: Flap of the temporal muscle (m. temporalis) with its natural position, its mass and its length, compared with other bound and free microvascular flaps, is the method of choice for covering the middle part of the face after the removal of large tumor masses. Material: The study included a sample of 36 patients who were surgically treated due to malignant process at the middle face level with the performed partial, total or bilateral maxillectomy at the Clinic for Maxillofacial Surgery, University Clinical Center in Sarajevo. The sample is divided into three groups. Methods: The usual procedure of lifting the temporal flap in the first group, at the second extension of the coronoid processus. A group of three-elongated myofascial flap, which includes lifting the muscle along with deep temporal branches of maxillary artery with deep temporal fascia, its two layers and associated stem of thesuperficial temporal artery. Results: Statistical analysis of the length indicated that in group III the mean length was 9.83 cm, group II- 8.25, and group I- 6 cm. The longest segmental lobe in group three provides safer work and the length of the lifted lobe with double vascular stem. This provides coverage of defects that cross over the median line of the middle face. The results coincide with the comparative world studies. Conclusion: For large defects at the meddle part of the face that overlap the median line, an extraordinary solution is elongated myofascial flap with double vascular supply, with a larger flap mass and a length of about 9.83 cm.