Direct current (DC) power systems are gaining interest in the last decade due to increased utilization of DC outputted power sources, DC based energy storage (ES) elements and DC inputted loads. Microgrids are also becoming widely researched as the main foundation of smart grid. It is therefore logical to try to utilize DC microgrid (DCMG) concepts in organization of power systems in wide range of applications. DC microgrids have several important advantages compared to alternating current (AC) microgrids. The control system is essential in order to keep DCMG operating properly, reliable and efficient. Their control structures, with special interest in hierarchical control are explored and compared in this paper in terms of architecture and techniques. This paper presents real world applications using DCMG concept. Future research propositions given in the final chapter can be used as a foundation for researchers exploring the area.

A building-integrated microgrid (BIM) has been a widely utilized concept in low-carbon smart cities. The key advantages of microgrids are using locally available renewable energy sources (RES) and reducing dependency on fossil fuels. Solar photovoltaic (PV) systems and battery storage systems play a crucial role in BIM to achieve desired goals. Due to legal/regulatory and technical restrictions, the distribution system operator (DSO) often imposes zero energy export (ZEE) for these microgrids. Therefore, the sizing of solar-battery systems in BIM, which will be technically feasible and economically optimized, is a challenge for designers, owners and DSO. The objective of this paper is to show the practical approach for design and sizing a microgrid for public buildings using the real data sets of a power consumption and solar energy production. As an example, the BIM for the Faculty of Electrical Engineering, University of Sarajevo is presented.

populations. Unlike GP,T2D had a higher AAMR in H than NH. Additionally,the highest rate of mortality increase in T2D was noted in W and H. More studies are warranted to identify causes of the rise among T2D and stratigies to reduce the racial and ethnic gaps.

The polarized massive multiple-input multiple-output (MIMO) technique has been regarded as a promising solution to millimeter wave (mmWave) communication systems, because it experiences more degrees-of-freedom than the scalar configuration, and it represents a significant opportunity for secure communication. To deliver smart service to terminals, it is essential to provide base stations (BS) with the capability of terminal’s direction-of-arrival (DOA) awareness. In this paper, a compressive sampling (CS) framework is proposed for two-dimensional (2D) DOA and polarization estimation in mmWave polarized massive MIMO systems. The proposed approach first reduces the data volume via a reduced-dimension matrix. Then it computes the signal subspace via the eigendecomposition of the compressed array measurement. Thereafter, the rotational invariance characteristic is utilized to form a normalized polarization steering vector. Finally, 2D-DOA and polarization are estimated by incorporating the Poynting vector and the least squares (LS) techniques. The proposed architecture is computationally much more economical than existing algorithms. Besides, it allows a mmWave BS to provide comparable estimation performance with arbitrary sensor geometry, which is more flexible than most of the existing architectures. Furthermore, it is robust to the sensor position error. Numerical simulations verify the advantages of the proposed framework.

Introduction Decompressive craniectomy (DC) can save brain tissue, but unfortunately it has many limitations and complications. Hinge craniotomy (HC), as less aggressive method seems to be adequate alternative not only to DC but also to conservative treatment. Research question Presentation of the results of modified surgical techniques of cranial decompression and comparing with more and less aggressive medical options. Material and methods A prospective clinical study was conducted during 86 months. Comatose patients who suffered refractory intracranial hypertension (RIH) were treated. Altogether, 137 patients have been evaluated. The final outcome of all patients in the study was evaluated after 6 months. Results Both surgical options resulted in adequate control of intracranial pressure (ICP). HC method was shown to have the lowest probability of worsening from a prior state of relative stability. Discussion and conclusion There was no statistically significant difference between methods to treatment of DC or HC, meaning the final outcome of patients treated in any manner. There was similar rate of early and late complications.

Surgical site infections (SSIs) are the most common adverse event occurring in surgical patients. Optimal prevention of SSIs requires the bundled integration of a variety of measures before, during, and after surgery. Surgical antibiotic prophylaxis (SAP) is an effective measure for preventing SSIs. It aims to counteract the inevitable introduction of bacteria that colonize skin or mucosa into the surgical site during the intervention. This document aims to guide surgeons in appropriate administration of SAP by addressing six key questions. The expert panel identifies a list of principles in response to these questions that every surgeon around the world should always respect in administering SAP.

Background and study aim. Group fitness programs are a form of programmed physical exercises with the aim of improving health, aesthetic appearance, satisfying the motivation to preserve health and reduce body weight. The aim of this study was to determine the effects of an experimental cardio fitness program on the morphological status of female subjects aged 21.5 ± 3.5 years. Material and methods. The experimental program was implemented over a period of three months (12 weeks), with a weekly frequency (3 x 20-60 min). Initial and final measurements were performed and Body weight, Body fat percentage, Body fat mass, Free fat mass, Body muscle mass, Body mass index and Basal metabolism rate were analyzed. All test subjects have their doctor's confirmation that they are healthy and can undergo training loads in a planned and clearly defined cardio program. Results. The exercise program on cardio equipment caused changes in all body composition parameters between the initial and final measurements t-test (except for muscle mass). The total average Body weight at the initial-final measurement (66.45 vs. 64.70kg; t= 5.225, p<0.000), which represents a difference of -1.75kg after the program. Conclusions. The assumption is that a controlled and monitored program with a special focus on nutrition would lead to even more precise results on the effects on body composition. Continuous application of the content of this program throughout the entire one-year macrocycle with a higher weekly frequency would certainly give even more significant results.

The characters of children in Samokovlija’s stories left a distinctive and recognizable mark in the literature of Bosnia and Herzegovina. Following the postulates of Ariès, this Paper examines the phenomenon of childhood from the perspective of the changeability in the comprehension of the position of the child and childhood in various social and ideological contexts. The children's characters, according to the considerations included, are contextualized between real and literary–fictional aspects of the Sephardic heritage. Based on the selected examples of Samokovlija's stories about childhood and children, we perceive the author's most important narrative strategies. The Paper also points to how much traditional comprehension of the child and childhood in the literature of Bosnia and Herzegovina, and in the Bosnian – Sephardic literary heritage made typically and characteristically social, cultural, and historical elements of the identity be incorporated in Samokovlija's characters of children.

This research focuses on the bacterium Listeria monocytogenes and its occurrence in vegetables, specifically, tomatoes and peppers, and the risks this bacterium poses to health. The research included laboratory analysis of 16 samples of tomatoes and peppers, as well as survey research in the area of the City of Mostar. Based on the survey questionnaire, the respondents showed their knowledge about the occurrence of the bacteria Listeria monocytogenes in food and their general knowledge about listeriosis. Laboratory analysis consists of two parts. The first part refers to the laboratory analysis of the samples conducted in the Federal Agro-Mediterranean Institute laboratory in collaboration with its employees. The second part refers to an additional laboratory analysis conducted in the Veterinary Institute of Herzegovina–Neretva Canton laboratory in Mostar. This laboratory research aimed to establish whether the bacterium Listeria monocytogenes was present in the samples of vegetables examined in the analysis. All the vegetable samples were chosen randomly from four different locations in the area of Mostar. Also, the analysis included the examination of the washed and unwashed tomatoes and peppers. After conducting the laboratory research, it was established that the bacterium Listeria monocytogenes was not found in the samples used, which means all the examination results were negative.