Academics perception of public areas video surveillance in smart cities

The growing trend of the urban population looks for the formation of the concept of Smart Cities, based on the principles of sustainable development, which will meet the needs of people who live in them. The city must develop its public service infrastructure to provide all the requirements for the population. One of the requirements, people living in cities is the security of public areas managed by the city. The system of video surveillance, public areas should contribute to the personal safety of citizens, children and traffic, reducing the rate of crime and more efficient operation of public services. This research aims to examine academics' opinions (perceptions) about the impact of security cameras on increasing security within the concept of Smart Cities. The research had conducted on the territory of Serbia through an online survey. The obtained data were processed statistically by Chi-square and T-test, ANOVA method, multiple regression and correlation using SPSS application. The research indicates that academics much more believe in the contribution of video surveillance, reducing the crime rate, than studies of the effectiveness of the use of video surveillance shows. Video camera monitoring accelerates the reactions of competent services, but video camera recordings have not always been accepted as evidence in court

DIGITAL TRANSFORMATION IMPACT ON JOBS AFTER COVID-19 PANDEMIC

Digital transformation (DT) is a change in the business model of the company by applying new digital technologies. New digital technologies related to the application of automation, robotics, artificial intelligence and contemporary information and communication technology (ICT). The consequence of the application of DT will be the replacement of routine tasks with automation, which is controlled by artificial intelligence. Greater flexibility and efficiency of work will be achieved in terms of place of work, time of work and ways of engaging people. The changes will be felt by all companies, regardless of size or activity. Due to that, DT will also change the labour requirements. Automation of routine jobs will lead to large layoffs. Many professions will almost disappear as the technology they worked with becomes obsolete. It is envisaged to create new job profiles following the requirements of new technologies. Since the application of DT requires new skills and knowledge, it is necessary to educate workers and managers to successfully apply new technologies

Self-Forecasting Energy Load Stakeholders for Smart Grids

The unpredictability of energy loads is responsible for a significant portion of efficiency loss in power grids. In order to reduce load uncertainties, emerging Smart Grid business models call for the active participation of traditionally passive stakeholders. The contribution of this work enables self-forecasting energy load stakeholders whose deterministic load behaviour make them reliable resources that can greatly benefit themselves and other Smart Grid stakeholders

TRENDS ANALYSIS IN GIG ECONOMY

This paper aims to research the main characteristics and trends of the freelancer’s market in temporary and occasional jobs in the Digital economy. The research was conducted by analyzing the content of reports of companies that hire freelancers, consulting companies and blogs of experts. The Digital economy is one of the results of the widespread application of information and communication technologies (ICT) that have influenced the transformation of the business model. Widespread application of ICT increased the flexibility of the work environment from the perspective of the place and time of work, as well as the way of engagement of the workforce. The application of ICT has expanded the scope and range of services available in today's market of temporary and occasional jobs. Contemporary companies in the Digital economy are increasingly focusing on their core competencies, leaving other jobs to external associates. The Gig economy refers to the engagement of labour in temporary and occasional jobs. Of the total number of employees in the USA during 2020, 36% worked as freelancers. Freelancers, during 2020, generated total revenue of US$ 1.2 trillion. Also, it is important to point out that a certain percentage of freelancers, currently, realize additional jobs in this way, but that there is a noticeable increase in the number of freelancers who accept this model of employment as the only way of permanent employment. Also, further growth in the number of freelancers in the world is predicted

TRENDS ANALYSIS IN GIG ECONOMY

This paper aims to research the main characteristics and trends of the freelancer’s market in temporary and occasional jobs in the Digital economy. The research was conducted by analyzing the content of reports of companies that hire freelancers, consulting companies and blogs of experts. The Digital economy is one of the results of the widespread application of information and communication technologies (ICT) that have influenced the transformation of the business model. Widespread application of ICT increased the flexibility of the work environment from the perspective of the place and time of work, as well as the way of engagement of the workforce. The application of ICT has expanded the scope and range of services available in today's market of temporary and occasional jobs. Contemporary companies in the Digital economy are increasingly focusing on their core competencies, leaving other jobs to external associates. The Gig economy refers to the engagement of labour in temporary and occasional jobs. Of the total number of employees in the USA during 2020, 36% worked as freelancers. Freelancers, during 2020, generated total revenue of US$ 1.2 trillion. Also, it is important to point out that a certain percentage of freelancers, currently, realize additional jobs in this way, but that there is a noticeable increase in the number of freelancers who accept this model of employment as the only way of permanent employment. Also, further growth in the number of freelancers in the world is predicted

Gel-combustion synthesis of CoSb2O6 and its reduction to powdery Sb2Co alloy

Sb2Co alloy in powdery form was synthesized via reduction with gaseous hydrogen of the oxide CoSb2O6, obtained by the citrate gel-combustion technique. The precursor was an aqueous solution of antimony nitrate, cobalt nitrate and citric acid. The precursor solution with mole ratio Co(II)/Sb(V) of 1:2 was gelatinized by evaporation of water. The gel was heated in air up to the temperature of self-ignition. The product of gel combustion was a mixture of oxides and it had to be additionally thermally treated in order to be converted to pure CoSb2O6. The reduction of CoSb2O6 by gaseous hydrogen yielded powdery Sb2Co as the sole phase. The process of oxide reduction to alloy was controlled by thermogravimetry, while X-ray diffractometry was used to control the phase compositions of both the oxides and alloys

The significance of adiponectin as a biomarker in metabolic syndrome and/or coronary artery disease

© 2015, Institut za Vojnomedicinske Naucne Informacije/Documentaciju. All rights reserved. Background/Aim. Adiponectin exerts profound protective actions during insulin resistence or prediabetes progression towards more severe clinical entities such as metabolic syndrome and/or cardiovascular disease. Since hypoadiponectinaemia contributes to the pathophysiology of the metabolic syndrome and coronary artery disease the level of circulating adiponectin may be an early marker of cardiovascular events. The aim of this study was to determine the relationships between serum adiponectin levels and parameters of both insulin sensitivity and obesity in patients with the metabolic syndrome and/or coronary artery disease, as well as to assess predictive value of adiponectin serum levels as a biomarker of these entitetis. Methods. The study included 100 patients with metabolic syndrome and/or coronary artery disease with different degree of insulin resistance and healthy, normoglycemic individuals. The control group comprising healthy, normoglycemic individuals was used for comparison. Serum level of adiponectin, fasting glucose, fasting insulinemia Homeostasis Model Assessment of Insulin Resistance (HOMAIR) index and anthropometric parameters were determined in all the subjects. Adiponectin was measured by using the ultrasensitive ELISA method. Insulinemia was measured by the radioimmunoassay (RIA) method. The presence of glycemic disorders was assessed on the basis of oral glucose tolerance test (OGTT). Results. Adiponectin level was inversely correlated with age (ϱ = - 0.015), parameters of both obesity (R = 0.437; p < 0.001) and insulin resistance (R = 0.374; p < 0.01). Decreasing in the level of adiponectin was strongly implicated in the development of insulin resistance. Most importantly, a statistically significant rapid decrease in adiponectin was in the prediabetic stages (p < 0.01). The predictor value of adiponectin was 1,356.32 ± 402.65 рg/mL. Conclusions. The obtained resultats suggest that adiponectin may be a useful marker in identification of individuals with risk of developing metabolic syndrome and coronary artery disease, as well as a predictor of prediabetes

Iterative approximation of fixed points of generalized weak Prešić type k-step iterative method for a class of operators

In this paper, we study the convergence of the generalized weak Presic type k-step iterative method for a class of operators f : Xk X satisfying Presic type contractive conditions. We also obtain the global attractivity results for a class of matrix di erence equations.The Ministry of Science of Republic of Serbia, Grant No. 174025http://www.pmf.ni.ac.rs/filomatam201