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Publikacije (45550)

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M. Raguž, Jerko Brzica, S. Grgić, Vedran Bjelanović, A. Mustapić, Darinka Šumanović Glamuzina, M. Mabić

Background: The aim of this study was to show the frequency and epidemiological characteristics of pregnant women who tested positive for SARS-CoV-2 during childbirth as well as the course, mode and outcome of their newborn treatment and diet after discharge. The aim is also to show individual symptoms developed by newborn from pregnant women who test positive for SARS-CoV-2. Method: The study included all the infants born to the pregnant women who tested positive for SARS-CoV-2 on a PCR test 24 hours prior to delivery or, had already been confirmed positive for the infection and had developed symptoms of the virus or had started treatment for SARS-CoV-2 several days prior to delivery. Results: 43/3237 (1.32%) of the pregnant women tested positive for the SARS-CoV-2 virus or had been infected prior to admission and were positive during delivery. A total of 45 newborn infants were transferred to a special room for the care of newborn infants born to SARS-CoV-2-positive mothers at the Department of Neonatology. Specifically, 30/45 (66.7%) of the newborn infants developed symptoms within the first hours of birth which withdrew spontaneously within 24–48 hours after birth. The symptoms referred to are not specific forSARS-CoV-2 infection and are not particularly indicative of infection. Conclusions: The conclusion of this short 21-month study is that prenatal and postnatal duration and outcome in infants is not aggravated by pregnant women who tested positive for SARS-CoV-2. Despite the individual symptoms described above and the pathological states the children developed during hospitalization, all the newborn infants were discharged from hospital in full health, and they were all breastfeeding following discharge in conditions which respected all the epidemiological preventive measures.

Željko Stević, Smiljka Miškić, D. Vojinović, Eldina Huskanović, Miomir Stanković, D. Pamucar

The efficiency of transport companies is a very important factor for the companies themselves, as well as for the entire economic system. The main goal of this paper is to develop an integrated model for determining the efficiency of representative transport companies over a period of eight years. An original model was developed that includes the integration of DEA (Data Envelopment Analysis), PCA (Principal Component Analysis), CRITIC (Criteria Importance Through Inter criteria Correlatio), Entropy and MARCOS (Measurement Alternatives and Ranking according to the COmpromise Solution) methods in order to determine the final efficiency of transport companies based on 10 input–output parameters. The results showed that the most efficient business performance was achieved in the period 2014–2017, followed by slightly less efficient results. Then, extensive sensitivity analysis and comparative analysis were performed, which confirmed, to some extent, the previously obtained results. In the sensitivity analysis, 30 scenarios with changes in the weights of criteria were created, while the comparative analysis was carried out with three other MCDM (Multi-Criteria Decision-Making) methods. Finally, the rank correlation index was determined using the Spearman and WS (Wojciech Salabun) correlation coefficients. According to the final results, very efficient years can be separated that can be the benchmark for furthering the business.

Suncica Hadzidedic, Silvia Berenice Fajardo Flores, Belma Ramic-Brkic

Purpose This paper aims to address the user perspective about usability, security and use of five authentication schemes (text and graphical passwords, biometrics and hardware tokens) from a population not covered previously in the literature. Additionally, this paper explores the criteria users apply in creating their text passwords. Design/methodology/approach An online survey study was performed in spring 2019 with university students in Mexico and Bosnia and Herzegovina. A total of 197 responses were collected. Findings Fingerprint-based authentication was most frequently perceived as usable and secure. However, text passwords were the predominantly used method for unlocking computer devices. The participants preferred to apply personal criteria for creating text passwords, which, interestingly, coincided with the general password guidelines, e.g. length, combining letters and special characters. Originality/value Research on young adults’ perceptions of different authentication methods is driven by the increasing frequency and sophistication of security breaches, as well as their significant consequences. This study provided insight into the commonly used authentication methods among youth from two geographic locations, which have not been accounted for previously.

Hamza Iseric, C. Alkan, Faraz Hach, Ibrahim Numanagić

The increasing availability of high-quality genome assemblies raised interest in the characterization of genomic architecture. Major architectural elements, such as common repeats and segmental duplications (SDs), increase genome plasticity that stimulates further evolution by changing the genomic structure and inventing new genes. Optimal computation of SDs within a genome requires quadratic-time local alignment algorithms that are impractical due to the size of most genomes. Additionally, to perform evolutionary analysis, one needs to characterize SDs in multiple genomes and find relations between those SDs and unique (non-duplicated) segments in other genomes. A naïve approach consisting of multiple sequence alignment would make the optimal solution to this problem even more impractical. Thus there is a need for fast and accurate algorithms to characterize SD structure in multiple genome assemblies to better understand the evolutionary forces that shaped the genomes of today. Here we introduce a new approach, BISER, to quickly detect SDs in multiple genomes and identify elementary SDs and core duplicons that drive the formation of such SDs. BISER improves earlier tools by (i) scaling the detection of SDs with low homology to multiple genomes while introducing further 7–33×\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\times$$\end{document} speed-ups over the existing tools, and by (ii) characterizing elementary SDs and detecting core duplicons to help trace the evolutionary history of duplications to as far as 300 million years. BISER is implemented in Seq programming language and is publicly available at https://github.com/0xTCG/biser.

K. Karavdić, A. Firdus, L. Kapetanović-Zametica, D. Anić, N. Kulenović-Spahović, N. Begic, S. Begić

Trauma is the leading cause of pediatric mortality and abdominal injury is a significant contributor to morbidity. Abdominal trauma in the population of injured children, is the third leading cause of death in this population, after head and thoracic injuries. It is the most common cause of death owing to unrecognized injury. They most often occur in traffic accidents, games and sports. The clinical presentation depends on the severity of the injury, the injured organ and the associated injuries. Mesenteric injury from blunt abdominal trauma is uncommon and can be difficult to diagnose. It is known that seatbelt trauma from motor vehicle accidents is the most common mechanism of mesenteric injury and that the mesentery of the small bowel is injured more frequently than that of the colon. We present an unusual case, a seven-year-old boy who was injured while skiing. The patient was in a state of hemorrhagic shock and underwent emergency surgery after an urgent diagnosis. During the operation, the leading trauma and the reason for the hemorrhagic shock were found to be a mesenteric injury, and bleeding from the branches of the superior mesenteric artery. Early transport, monitoring and diagnostics significantly contribute to reducing morbidity and mortality. The standard in surgery is non-operative treatment of injured parenchymal organs. A multidisciplinary approach that includes doctors of various specialties (pediatric surgeons, pediatricians, neurosurgeons, anesthesiologists and radiologists) who contribute to the diagnosis and treatment of injured children through diagnostic and therapeutic procedures has a key role. At the end, the decision regarding surgical treatment is responsibility of pediatric surgeon.

M. Sućeska, B. Stimac Tumara, M. Dobrilović, V. Bohanek

ABSTRACT Numerical modeling of detonation by the Wood-Kirkwood detonation theory requires the detonation front curvature radius to be specified as an input parameter. In this work we present two empirical equations for the estimation of the curvature radii of various explosives. The equations are derived based on a large number of literature-reported experimental data on the detonation front curvature radii as a function of charge radii and failure radii. The proposed equations predict the front curvature radii with the root mean square error of about 30%, which is a significant improvement compared to previously proposed empirical equations.

17. 3. 2022.
3
Hikmet Karčić

Palmberger, Monika, How Generations Remember: Conflicting Histories and Shared Memories in Post-War Bosnia and Herzegovina. London: The Palgrave Macmillan, 2016. pp. vii+254. ISBN 978-1-137-45063-0.

17. 3. 2022.
0
Hikmet Karčić

Sebina Sivac-Bryant, Re-Making Kozarac: Agency, Reconciliation and Contested Return in Post-War Bosnia, Palgrave Studies in Com- promise after Conflict, 2016. Str. 214, ISBN 978-1-137-58838-8.

Saeh, Bassam, Nadnaravni jezik Kur'ana, s engleskog preveo: Munir Drkić. Sarajevo: Centar za napredne studije, 2018. str. 104. ISBN 978-9958-022-68-5.

17. 3. 2022.
29
A. Greljo, Ajdin Palavrić, A. E. Thomsen

We study the flavor structure of the lepton and baryon number-conserving dimension-6 operators in the Standard Model effective field theory (SMEFT). Building on the work of [1], we define several well-motivated flavor symmetries and symmetry-breaking patterns that serve as competing hypotheses about the ultraviolet (UV) dynamics beyond the SM, not far above the TeV scale. In particular, we consider four different structures in the quark sector and seven in the charged lepton sector. The set of flavor-breaking spurions is (almost) always taken to be the minimal one needed to reproduce the observed charged fermion masses and mixings. For each case, we explicitly construct and count the operators to the first few orders in the spurion expansion, providing ready-for-use setups for phenomenological studies and global fits. We provide a Mathematica package SMEFTflavor (https://github.com/aethomsen/SMEFTflavor) to facilitate similar analyses for flavor symmetries not covered in this work.

M. Sartelli, Francesco M Labricciosa, F. Coccolini, R. Coimbra, F. Abu-Zidan, L. Ansaloni, M. Al-Hasan, S. Ansari et al.

Background The objectives of the study were to investigate the organizational characteristics of acute care facilities worldwide in preventing and managing infections in surgery; assess participants’ perception regarding infection prevention and control (IPC) measures, antibiotic prescribing practices, and source control; describe awareness about the global burden of antimicrobial resistance (AMR) and IPC measures; and determine the role of the Coronavirus Disease 2019 pandemic on said awareness. Methods A cross-sectional web-based survey was conducted contacting 1432 health care workers (HCWs) belonging to a mailing list provided by the Global Alliance for Infections in Surgery. The self-administered questionnaire was developed by a multidisciplinary team. The survey was open from May 22, 2021, and June 22, 2021. Three reminders were sent, after 7, 14, and 21 days. Results Three hundred four respondents from 72 countries returned a questionnaire, with an overall response rate of 21.2%. Respectively, 90.4% and 68.8% of participants stated their hospital had a multidisciplinary IPC team or a multidisciplinary antimicrobial stewardship team. Local protocols for antimicrobial therapy of surgical infections and protocols for surgical antibiotic prophylaxis were present in 76.6% and 90.8% of hospitals, respectively. In 23.4% and 24.0% of hospitals no surveillance systems for surgical site infections and no monitoring systems of used antimicrobials were implemented. Patient and family involvement in IPC management was considered to be slightly or not important in their hospital by the majority of respondents (65.1%). Awareness of the global burden of AMR among HCWs was considered very important or important by 54.6% of participants. The COVID-19 pandemic was considered by 80.3% of respondents as a very important or important factor in raising HCWs awareness of the IPC programs in their hospital. Based on the survey results, the authors developed 15 statements for several questions regarding the prevention and management of infections in surgery. The statements may be the starting point for designing future evidence-based recommendations. Conclusion Adequacy of prevention and management of infections in acute care facilities depends on HCWs behaviours and on the organizational characteristics of acute health care facilities to support best practices and promote behavioural change. Patient involvement in the implementation of IPC is still little considered. A debate on how operationalising a fundamental change to IPC, from being solely the HCWs responsibility to one that involves a collaborative relationship between HCWs and patients, should be opened.

Short circuit faults are one of the most common disturbances in power systems that occur because of insulation failure due to a sudden overvoltage condition caused by lightning, switching operations, insulation contamination, etc. Medium voltage power distribution networks use different methods for grounding the neutral point. Influences of these grounding methods on the characteristics of single-phase short circuit fault are discussed in this paper on the example of substation “Bugojno”. Modeling and simulation are implemented in EMTP-RV (Electromagnetic Transient Program-Restructured Version) software. Data recorded by protection system during normal operation and three-phase short circuit fault in the substation are analyzed and used for comparison with simulation results to validate developed model of the observed part of power system. This validated model was then used to analyze the effects of neutral point grounding methods on the characteristics of single-phase short circuit fault.

Transient events, especially those related to the short circuit faults, are the main causes of power distribution lines outages. This paper is dedicated to the analysis of three-phase short circuit fault and its impact to the real 20 kV power distribution lines. One of the most important parts of Bosnia and Herzegovina's power system was monitored and analyzed. Short circuit currents and voltages were obtained by using the power distribution lines numerical protection system measurements from the moment of fault occurrence to the moment when the faulty line was switched off. Part of the power system of interest was modeled in EMTP-RV (Electromagnetic Transient Program - Restructured Version) software which is standardized software for transient analyses. Several simulations were conducted to perform fault analysis. Measured data and simulation results were compared.

Overvoltages are unpredictable and extremely dangerous for the electric power system. The causes of overvoltages are different, but lightning is considered as one of the most serious causes of overvoltages. High voltage substations are one of the main parts of the power system whose faults caused by overvoltages can lead to outage of large part of power system. Therefore, overvoltage protection of a high voltage substation is very important. In order to protect the substation as much as possible from the effects of the overvoltages, it is necessary to implement elements that can help reduce these effects, for example surge arresters. This paper presents the effects of the use of surge arresters in high voltage, gas SF6 insulated substation, modeled in the EMTP-RV (Electromagnetic Transient Program-Restructured Version) software. An accurate representation of lightning surge incoming in the substation is very important because it strongly affects the design of overvoltage protection system. In this paper parameters of lightning strikes are determined using Sigma Slp software.

M. Maksimovic, Marijana Cosovic

The Church of the Holy Archangels Michael and Gabriel located in Sarajevo is a national monument belonging to Eastern Orthodox cultural heritage. It is a very well-preserved sacral object considering the date of first mention is 1539 and it has been used to date for the religious purposes. On the other hand, deterioration of aging historical/religious buildings is inevitable process composed of cumulative, progressive and nonlinear factors. Hence, in order to maintain their best condition for as long as possible compliance with guidelines and procedures for cultural heritage preservation is needed. Climate control within historical/religious buildings surfaced as an important research area as indoor climate is changing in recent times. Humans have always shaped their environment by desire to enjoy concurrently the comfort of modern living as well as preserve the monuments for future generations. For example, use of heating systems in historical/religious buildings are creating new challenges for their preservation. This paper is an attempt towards the implementation of Internet of Things (IoT) system with focus on preservation of the national monument using a simulation of climate control in the Church of the Holy Archangels Michael and Gabriel.

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