On the October 31st, 2018 passed away Amela Kulenovic, full professor of Faculty of medicine of University of Sarajevo. Professor Amela Kulenovic was born in Sarajevo in 1956. She finished Grammar school and Gymnasium in Sarajevo. She graduated at the Faculty of medicine of University of Sarajevo in the 1980. During a period from 1978 to 1981, she worked as demonstrator at Cathedra of Anatomy of the Faculty of medicine at Sarajevo University. Since 1981 until 1982, she worked as associate assistant at the same Cathedra.

Medical Archives is the oldest biomedical journal in Bosnia and Herzegovina, and all important individuals of medical clinical practice have been published in the Medical Archives, and even today, in index and citation databases: Medline, PubMed, PubMed Central, Scopus, open access variants, is the main advertiser of medical sciences in Bosnia and Herzegovina. Medical Archives in the future would like to become a free-of-charge journal, which will publish open access articles, because finally, the financial component should be a deciding factor whether the article will be published or not. The journal opened the door to PhD students, which should also be an incentive for further progress. The main goal of the journal is to continuously raise the quality, with the addition of establishment as a source of quality science.

Pilot contamination due to pilot reuse in adjacent cells is a very serious problem in massive multi-input multiple-output (MIMO) systems. Therefore, proper pilot allocation is essential for improving system performance. In this paper, we formulate the pilot allocation optimization problem so as to maximize uplink sum rate of the system. To reduce the required complexity inherent in finding the optimum pilot allocation, we propose a low-complexity pilot allocation algorithm, where the formulated problem is decoupled into multiple subproblems; in each subproblem, the pilot allocation at a given cell is optimized while the pilot allocation in other cells id held fixed. This process is continued until the achievable sum rate converges. Through multiple iterations, the optimum pilot allocation is found. In addition, to improve users’ fairness, we formulate fairness-aware pilot allocation as maximization problem of sum of user’s logarithmic rate and solve the formulated problem using a similar algorithm. Simulation results show that the proposed algorithms match the good performance of the exhaustive search algorithm, meanwhile the users’ fairness is improved. key words: pilot contamination, massive MIMO, pilot allocation

Introduction: Violence at work has become an alarming problem worldwide. The real size of the problem is unknown because of underreporting. The aim of the survey was to estimate the prevalence of workplace violence (WPV) among primary health care professionals in the Public Institution Health Center of Sarajevo Canton (HCSC), Bosnia and Herzegovina, and determine possible association with demographic and work-related characteristics of participants. Aim: The aim of the survey was to estimate the prevalence of workplace violence (WPV) among Primary health care professionals in the Public Institution Health Center of Sarajevo Canton (HCSC), Bosnia and Herzegovina, and determine possible association with demographic and work-related characteristics of participants. Methods: A cross-sectional study was conducted between March and May 2017. The sample consisted of medical professionals employed at HCSC. The data were collected by a questionnaire with 42 questions divided into 7 blocks of topic. Descriptive statistics were used to describe the sample. Binary logistic regression analysis was used to test the association between the occurrence of violence and independent variables (gender, age, years of work experience and office setting). Results: A total of 558 out of 983 health professionals employed in Primary health care were involved in this survey. The overall prevalence of WPV was 90.3%, with 498 (89.2%) exposed to verbal violence and 417 (74.7%) exposed to indirect physical violence. Binary logistic regression analysis indicated that the following demographic and work-related characteristics were positively significantly associated with WPV: women were associated with verbal violence [Odd ratio (OR) 1.91, 95% confidence interval (CI) 1.06, 1.47] and stalking [OR= 2.06, 95% CI (1.04, 4.08)]. Office setting (urban) was significantly positively associated with indirect physical violence [OR= 1.59, 95% CI (1.03, 2.47)]. Conclusion: Almost all health professionals in Sarajevo primary health care were subjected to different types of WPV. There is a need for intervention to provide safer workplace environment. Professional, administrative, legal support and protection of health professionals by the health authorities and institution management is urgently required.

The aim of the paper is establishing a link between Big Data connected with Industry 4.0. We are developing a modern economy which is based on supply chains and logistics. Within each logistics are IT solutions. Some of the world’s solutions are compiled in this paper and guidelines are set in the development of such solutions. Industry development 4.0, and in particular the development of Big data, gives us the possibility to introduce new ways of the industry. In the development of industry, maximizing production and reducing costs is extremely important. Real-time data and advanced algorithms give us the possibility to obtain real-time operational industry. Big data and their analysis are of great use in the industry because they improve the accuracy of the decision-making process. We must organize a structure that can design, manage and develop projects based on IoT and Big Data / Analytics technologies. In the industry, good sensor technology provides access to information. The paper has a focus on the managing the database with Big data in the Industry 4.0.

Abstract In this video, we demonstrate epidermoid tumor microsurgical resection of the cerebellopontine angle (CPA) performed by the senior author (K.I.A.). Epidermoid tumors arise from ectoderm trapped within/displaced into the central nervous system. They show predilection for CPA Angle (up to 40%), 4th ventricle, suprasellar region, and spinal cord.1 They are the 3rd most common CPA tumor, comprising approximately 7% of CPA pathology. CPA lesions can produce 5th and 7–12th cranial nerve neuropathies.2 3 4 Recurrent episodes of aseptic meningitis caused by cyst content rupture may occur. Symptoms include fever, meningeal irritation, and hydrocephalus. A 26-year-old female presented with headaches. Head magnetic resonance imaging (MRI) revealed right CPA tumor with brain stem compression (Fig. 1, A–C). There was evidence of restricted diffusion in diffusion-weighted imaging, typical of epidermoid tumor. Surgery was performed in prone position with head turned 25 degrees to the ipsilateral side using retrosigmoid craniotomy.5 Tumor was ventral to the 7th and 8th cranial nerve complexes, between the 5th nerve as well as toward the brainstem. The surgical plan was gross total resection with tumor capsule resection to prevent recurrence.6 (Small residuals can be left behind when capsule is adherent to critical structures.) Tumor was adherent to brain stem perforators which were preserved using meticulous dissection. Cranial nerves and vascular structures were also left intact. We irrigated with antibiotic saline and used perioperative treatment to prevent aseptic meningitis. The pathohistological diagnosis revealed epidermoid tumor cyst. Postoperative MRI revealed complete resection (Fig. 1, D–F). The patient recovered fully and was neurologically intact. The link to the video can be found at: https://youtu.be/LyWl-KZUSGY.

The impact of interfaces and heterojuctions on the electronic and thermoelectric transport properties of materials is discussed herein. Recent progress in understanding electronic transport in heterostructures of 2D materials ranging from graphene to transition metal dichalcogenides, their homojunctions (grain boundaries), lateral heterojunctions (such as graphene/MoS2 lateral interfaces), and vertical van der Waals heterostructures is reviewed. Work on thermopower in 2D heterojunctions, as well as their applications in creating devices such as resonant tunneling diodes (RTDs), is also discussed. Last, the focus turns to work in 3D heterostructures. While transport in 3D heterostructures has been researched for several decades, here recent progress in theory and simulation of quantum effects on transport via the Wigner and non‐equilibrium Green's functions approaches is reviewed. These simulation techniques have been successfully applied toward understanding the impact of heterojunctions on transport properties and thermopower, which finds applications in energy harvesting, and electron resonant tunneling, with applications in RTDs. In conclusion, tremendous progress has been made in both simulation and experiments toward the goal of understanding transport in heterostructures and this progress will soon be parlayed into improved energy converters and quantum nanoelectronic devices.

Gastric necrosis with perforation is a rare and potentially life-threatening condition in childhood beyond the neonatal period. We report a case of gastric necrosis and perforation of a portion of the great curvature due to a massive gastric dilatation caused by pathological aerophagia in a 13-years-old, mentally impaired adolescent girl. Despite the successful surgical treatment, the patient's condition rapidly deteriorated post-operatively and she died due to the multisystem organ failure and multiple infections. In addition, we surveyed the literature on this rare condition and assessed the preventive actions to reduce this life-treating condition.