Papers by nemanja nikolic
Acta Medica Medianae, Jun 15, 2022
The risk stratification as a part of preoperative preparation of patients involves a series of di... more The risk stratification as a part of preoperative preparation of patients involves a series of diagnostic and therapeutic procedures with the main objective of reducing peri/postoperative morbidity and mortality. The aim of the study was to identify a wide spectrum of preoperative clinical and demographic characteristics which were significantly associated with the occurrence of myocardial infarction and cardiac arrest (MICA) during six-month period after vascular surgical procedure, during 2017, 2018, 2019, the study included 144 patients (96 men-66.6 % and 48 women-33.3 %) over 65 years of age (average 70 years). MICA in the first six months after the intervention was associated with higher NYHA class (p < 0.001), previous coronary artery disease (p < 0.001), cardiomyopathy (p < 0.05) or previous myocardial infarction (p < 0.05), usage of calcium channel antagonists (p < 0.05) and antiplatelet drugs (p < 0.001), higher ASA score (p < 0.01), higher urea concentration (p < 0.01), lower ejection fraction (p < 0.001) and longer intensive care unit stay (p < 0.001). Using binary logistic regression method, multivariate analysis has identified previous coronary artery disease as a predictor of MICA occurrence (p < 0.01). In the multivariate Coxregression model (χ 2 = 71.515, p < 0.001), there were six independent predictors of survival without MICA. Previous coronary artery disease is most significant preoperative risk factor for MICA occurrence. Variables related to heart failure and high urea concentration are independent predictors for MICA.
Acta Medica Medianae, Mar 15, 2022
Srpski medicinski casopis Lekarske komore
Reliance on surgery, improvements in surgical techniques, and perioperative management have led t... more Reliance on surgery, improvements in surgical techniques, and perioperative management have led to a dramatic increase in the frequency of surgical procedures in the elderly population. According to the European Society of Cardiology and the European Society of Anaesthesiology and Intensive Care, major vascular surgery is defined as high-risk, considering the frequency of myocardial infarction and cardiac arrest, which is higher than 5%. Age is an independent predictor of myocardial infarction and cardiac arrest. Heart function alterations are primary changes that occur with advancing age. Risk stratification represents a set of procedures that include identifying chronic systemic diseases, determining their severity, stability and the need for further evaluation and/or therapy optimization, with the aim of reducing perioperative and postoperative mortality and morbidity. In addition to the application of risk scores, accurate risk stratification requires the combined application of...
Interpersona: An International Journal on Personal Relationships
In recent years, online dating websites, applications, and social media have become increasingly ... more In recent years, online dating websites, applications, and social media have become increasingly popular tools for finding romantic and/or sexual partners. Individual differences in personality traits predict the use of online dating websites and applications and also influence the motives for their use. Previous work regarding mating strategies in the context of online dating has focused on the Dark Tetrad concept of malevolent personality while ignoring the Light Triad concept of beneficent personality. Light and dark personality traits are not seen as polar opposites as they supplement each other. Thus, the current study aimed to explore the utility of both light (i.e., Faith in Humanity, Humanism, and Kantianism) and dark (i.e., Machiavellianism, narcissism, psychopathy, and sadism) personality traits in predicting mating strategies in the online context. A total of 216 participants, ages 20 to 56, which used online dating sites, apps, and social media for finding partners in th...
Communications
Times of uncertainty and fear were brought on by Covid-19. The ongoing pandemic is a fruitful gro... more Times of uncertainty and fear were brought on by Covid-19. The ongoing pandemic is a fruitful ground for fake news, as citizens try to find explanations that fit into their worldviews. This process polarizes society and creates echo chambers amplified by recommender systems. Our main goal is to detect anti-vaxxer echo chambers in Serbia by analyzing online reactions to the recent detention of prominent anti-vaxxer Dr. Jovana Stojkovic. A content analysis of online comments is deployed in anti-regime left-leaning, anti-regime right-leaning, and pro-government media to explore attitudes towards a vaccination conspiracy theory, police action towards anti-vaxxers, and the government crisis response team. We clearly identify the anti-vaccine echo chamber among commentators of anti-regime right-leaning media (YouTube podcasts). Additionally, we describe attitudes expressed around issues related to vaccination. Limitations and implications for future research are discussed.
Cognitive reserve (CR) is defined as the ability to optimize or maximize usage of neural networks... more Cognitive reserve (CR) is defined as the ability to optimize or maximize usage of neural networks when facing tasks with greater cognitive load serving as a protective factor from cognitive decline. In clinical population, it is assumed that CR has the role of minimizing effects of brain pathology on cognitive functioning through more flexible alterations between engaged neural networks. In the earliest stages of construct development, it was predominately expressed via levels of education or verbal intelligence. However, accumulated research evidence suggested that CR is a multidimensional construct and that various lifelong activities should be taken into account when assessed. Following this line of studies, Cognitive Reserve !ndex questionnaire (CR!q) was developed providing a standardized procedure for measuring CR that includes years of formal and informal education, professional occupational background and engaging in various cognitively stimulating activities. The goal of th...
Filozofija i drustvo
The aim of this paper is to clarify specific aspects of the impact of the brain-machine interface... more The aim of this paper is to clarify specific aspects of the impact of the brain-machine interface on our understanding of subjectivity. The brain-machine interface is presented as a phase of cyborgization of humans. Some projects in the field of brain-machine interface are aimed at enabling consensual telepathy - communication without symbolic mediation. Consensual telepathy refers to one of potential ways of transmission of information within singularity. Therefore, consensual telepathy is an important aspect of singularity. Singularity or human-machine symbiosis shows some similarities with child-mother unity. Therefore, the psychodynamic perspective might be considered useful in thinking about human-machine symbiosis. Knowledge from developmental psychodynamic psychology combined with insights by Slavoj Zizek and Jean Baudrillard provides an additional perspective looking at human-machine symbiosis. The paper claims that if consensual telepathy becomes another way of communicatio...
Nauka bezbednost policija, 2021
5G is a critical sensitive technology that could endanger public safety. Recent progress of Huawe... more 5G is a critical sensitive technology that could endanger public safety. Recent progress of Huawei in the number of patents relating to 5G caused a trade war over the issue, with multiple actions from the U.S., including restrictions towards Chinese companies. This paper seeks to explore the issue of 5G around global security and the struggle for geopolitical dominance. Identified gap in the literature is related to the question if there is a safe side in terms of choices that countries make around 5G vendors. Earlier studies have not considered this question appropriately in a comprehensive way, because of one sided look and policy approach. The second question attempts to find the best solution for countries to escape dominance of 5G vendors, ensure high safety and avoid potential hazards. To put 5G technology in context, we present geopolitical issues around a global information infrastructure, provide information into China's 5G strategy and history of tech struggles between...
Ekonomika preduzeca, 2021
Neuromarketing showed up as a new interdisciplinary field that bridges neuroscience and marketing... more Neuromarketing showed up as a new interdisciplinary field that bridges neuroscience and marketing. A relatively young field that was born within the "neuroculture" matrix is covered with a veil of mystery and often misrepresented in the media as a powerful tool used by corporations to manipulate consumers' preferences, purchasing behavior, etc. In this paper, we have done an extensive literature review in order to put light on some dilemmas and take off the veil of mystery that surrounds neuromarketing. Firstly, (i) we discussed the definition and context in which neuromarketing emerged, (ii) important brain areas in consumer neuroscience which find their application in neuromarketing research, (iii) techniques used in neuromarketing (neuroimaging and non-neuroimaging), (iv) ethical issues in the field of neuromarketing (a part of neuroethics), and (v) limitations and recommendations for future development of neuromarketing.
Socioloski pregled, 2021
Whistleblowing cases that shook intelligence community in the last decade have something in commo... more Whistleblowing cases that shook intelligence community in the last decade have something in common. Edward Snowden, Bradley Manning, and Reality Winner are all members of a single generation - Millennials. We challenge the viewpoint that depicts this generation as a potential "insider threat." Millennials do have certain psychological traits and attitudes that can be related to tendencies towards whistleblowing, but these findings still do not approve the rhetoric that creates distrust towards the generation. This paper proposes a shift from the cultural to the socio-psychological level of analysis, with respect to both cultural and individual characteristics of whistleblowers, but puts more emphasis on the social dimension. In comprehending recent cases of leaking classified information, it is not enough to reduce explanation to some individual personality traits or hide behind an abstraction, such as the concept of generation. To shed more light on the issue, we introduc...
Acta Medica Medianae, 2021
Arterial hypertension is the condition where the blood pressure is higher than 140/90 mm Hg. Alon... more Arterial hypertension is the condition where the blood pressure is higher than 140/90 mm Hg. Along with its complications, it is the leading factor for cardiovascular mortality. Arterial hypertension can be systolic, diastolic and combined. Diagnosis of arterial hypertension cannot be established on the basis of a single measurement, but it is necessary to make measurements in different situations and environments. The study aimed to evaluate efficacy of fixed combination antihypertensives in patients with stage I and II hypertension after antihypertensive monotherapy failed to deliver results in reducing blood pressure. In this study, we analyzed data of 395 hypertension patients aged between 65-80 years, previously treated with monotherapy. During 4 months of examination, 3 doctor visits were scheduled when their TA values were measured, and each of them received fixed-dose combination antihypertensives. The data obtained were processed by appropriate statistical analyzes. At the third doctor visit, 69.8% patients achieved blood pressure target value, and the blood pressure decreased by 16.6/12.3% (р = 0.000). The noninvasive 24h Holter monitoring showed significantly less oscillation in blood pressure values throughout the day, and also, much smaller percentage of patients forgot to take therapy. During this study, the efficiency of fixed-dose combination antihypertensives was proved considering that in a considerable number of patients blood pressure reached the target values, there were no unwanted side effects, the patients rarely forgot to take the medicine, and there were significantly less oscillation in blood pressure on Holter monitoring.
2017 25th Telecommunication Forum (TELFOR), 2017
Android is an open-source software that became popular on mobile devices, but lately, can be foun... more Android is an open-source software that became popular on mobile devices, but lately, can be found on other platforms like television and set-top box devices. With the development of internet television and a possibility for two-way communication between client and content provider, there is a lot of room for the development of modern methods for protection of audio and video streams. A couple of notable implementations for data protection systems are present on the market today. Unfortunately, the source code of these implementations is not available online, which makes it difficult to develop new systems for data protection. This paper presents one solution for safe playback of multimedia content on Android-based systems realized using the trusted execution environment.
2017 IEEE 7th International Conference on Consumer Electronics - Berlin (ICCE-Berlin), 2017
Nowadays the consumer electronics market is changing in such a way of making set-top box devices ... more Nowadays the consumer electronics market is changing in such a way of making set-top box devices with more features in smaller time frames. Meanwhile, in parallel, advanced multimedia operating systems appearing containing abstraction of basic media components, like demultiplexer, decoder and digital right management plugins. Basic media components must be implemented by vendors, to make their device certificated. This paper presents a solution of generic digital television middleware which instead of traditional approach implementing hardware abstraction layer and connecting middleware to low level drivers, reuses media components from the system, skips the porting phase and thus allows to build the final product in less time. It this paper, two approaches to accomplish this goal are presented and compared.
Theoria, Beograd
In this paper, I will consider certain specificities of psychotic discourse. Specifically, relyin... more In this paper, I will consider certain specificities of psychotic discourse. Specifically, relying on classical, contemporary psychoanalysis and linguistics, I will unravel the logic behind the production of neologisms, which represent one of the basic features of the speech of psychotic patients. The paper indicates the importance of taking into account both semantic and prosodic aspects of the patient?s speech. The main thesis is the interdependence of the integrative capacities of the subject of analytical experience (identity) and his ability to speak. The absence of capacity for dialogue, that is, ?intentional symbolic exchange?, is considered a consequence of severe structural deficiencies of the speaker. That incommunicableness (idiosyncrasy) of speech will be presented through the examples of Friedrich H?lderlin and James Joyce.
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Papers by nemanja nikolic