Developing service-oriented application for the educational cloud

In this paper we present an application which is used for cloud computing infrastructure management. The application is based on web services and it is integrated with an existing e-learning system. Main users of the applications are teachers and students and the application consists of two main parts which are web application and mobile application. The application is successfully implemented at the e-Business Laboratory of the Faculty of Organizational Sciences in Belgrade

Creating Adaptive Environment for e-Learning Courses

In this paper we provide an approach to creating adaptive environment for e-learning courses. In the context of e-education, successful adaptation has to be performed upon learners’ characteristics. Currently, modeling and discovering users’ needs, goals, knowledge preferences and motivations is one of the most challenging tasks in e-learning systems that deal with large volumes of information. Primary goal of the research is to perform personalizing of distance education system, according to students’ learning styles. Main steps and requirements in applying business intelligence techniques in process of personalization are identified. In addition, we propose generic model and architecture of an adaptive e-learning system by describing the structure of an adaptive course and exemplify correlations among e-learning course content and different learning styles. Moreover, research that dealt with application of data mining technique in a real e-learning system was carried out. We performed adaptation of our e-learning courses using the results from the research

USING INTERNET OF THINGS IN MONITORING AND MANAGEMENT OF DAMS IN SERBIA

This paper discusses harnessing Internet of Things in monitoring and managing dams in Republic of Serbia. Large dams are of major importance, primarily because of their use for electricity, but risks which are associated with it should be greatly taken into account. There is a need to consolidate information related to dam facilities in order to use them for dam management in Republic of Serbia. An information system has been developed based on existing systems, allowing utilization of intelligent network sensors. The aim of paper is to describe possibilities Internet of Things application within specific system for dam safety management. In order to facilitate the inclusion of a large number of intelligent sensors, a new data acquisition module for communication with sensors in the monitoring network is defined. The system should provide on time alerting in the case that the security parameters deviate from expected values

Crowd-Based Open Innovation: Models, Challenges, and Trends

This article considers concepts, models, achieved results and emerging trends of the open innovation approach to organizing and conducting research and development activities in companies. The goal is to perform a comprehensive systematic analysis of literature that considers the open innovation models that focus on the collaboration of various stakeholders, including companies, academia, government, startups, individuals, and others, in the context of design and development of innovative digital services, through integration of crowd-sourcing and DevOps. As a result, we propose a new framework for organizing open innovation activities using DevOps practices for digitals service development. Finally, we present examples of implementing crowd-based open innovation models in various contexts

Small bowel adenocarcinoma mimicking a large adrenal tumor

Introduction. Adenocarcinoma of the small bowel is a rare gastrointestinal neoplasm usually affecting the distal duodenum and proximal jejunum. Because of their rarity and poorly defined abdominal symptoms, a correct diagnosis is often delayed. Case Outline. We present a 43-year-old woman admitted at the Clinic for Endocrinology due to a large tumor (over 7 cm) of the left adrenal gland. The tumor was detected by ultrasound and confirmed by CT scan. The patient complained of abdominal pain in the left upper quadrant, fatigue and septic fever. Normal urinary catecholamines excluded pheochromocytoma. The endocrine evaluations revealed laboratory signs of subclinical hypercorticism: midnight cortisol 235 nmol/L, post 1 mg - overnight Dexamethasone suppression test for cortisol 95.5 nmol/L and basal ACTH 4.2 pg/mL. Plasma rennin activity and aldosterone were within the normal range. Surgery was performed. Intraoperative findings showed signs of acute peritonitis and a small ulceration of the jejunum below at 70 cm on the anal side from the Treitz’s ligament. Adrenal glands were not enlarged. Patohistology and immunochemistry identified adenocarcinoma of the jejunum without infiltration of the lymphatic nodules. The extensive jejunal resection and lavage of the peritoneum were performed. Due to complications of massive peritonitis, the patient died seven days after surgery. Conclusion. Poorly defined symptoms and a low incidence make the diagnosis of small bowel carcinoma, particularly of the jejunal region, very difficult in spite of the new endoscopic techniques

HARNESSING CLOUD COMPUTING INFRASTRUCTURE FOR E-LEARNING SERVICES

This paper introduces an innovative model for harnessing cloud computing infrastructure within an e-learning ecosystem. The main goal was to design a scalable, reliable and secure IT environment that provides a plethora of e-learning services and seamless integration of the heterogeneous e-learning components through IaaS, PaaS and SaaS cloud service models. The e-learning services are tailored to foster courses for IT engineers in the areas of mobile technologies, social computing, Internet of Things and big data. The model was implemented and evaluated in the e-learning ecosystem of the E-business Lab, University of Belgrade

Comparative Analysis of Core Banking Solutions in Serbia

Core banking solutions (CBS) became the main subject of competition within banking market. This paper describes the architecture of a standard CBS. Discussed here are the solutions of the world’s greatest vendors as well as implementation of CBS solutions in Serbia. A comparative analysis of the examined solutions was performed regarding the most sought after features when it comes to the core banking system. Based on results it can be concluded that the complexity of core banking solution depends mostly on client’s requirements. The core banking system may contain a wide range of functional areas (modules), but technical features as well as protection systems of these solutions have the most significant impact on their reliability

Review of the conditions and environmental protections measures in the DRP of industrial zone Vlasotince

Radne zone su afirmisani prostorni modeli za unapređenje privrednog razvoja određenog prostora. U cilju stvaranja uslova za razvoj proizvodnih i poslovnih sadržaja, unapređenje identiteta i konkurentnosti opštine, podizanje nivoa atraktivnosti za privlačenje investicija i povećanje zaposlenosti, krajem 2015. godine inicirana je izrada Plana detaljne regulacije (PDR) radne zone u Vlasotincu. S obzirom na sadržaje, karakter i intenzitet delatnosti u radnim zonama, one su umanjenog ekološkog kapaciteta i mogu imati štetan uticaj na životnu sredinu. Kako nije predviđena izrada strateške procene uticaja PDR-a na životnu sredinu a usled rizika od ekološke degradacije prostora, jedan od opštih (projektno-programskih) ciljeva planiranja, korišćenja, uređenja i zaštite planskog područja je i ‘’definisanje i sprovođenje mera zaštite životne sredine’’. Planski proces koji se završio usvajanjem Plana krajem 2016. godine, pored stručnih kontrola predviđenih Zakonom o planiranju i izgradnji, praćen je i od strane Evropske Unije i Vlade Švajcarske preko programa Evropski Progres kojim je insistirano na ekološki prihvatljivijim principima, načelima i modelima planiranja i uređenja. Cilj rada je da prikaže kako je integralnim pristupom u planiranju proizvodnih i poslovnih sadržaja i definisanјеm ekološki prihvatljivijih planskih rešenja i mera zaštite životne sredine, moguće stvoriti planski osnov za privredni razvoj koji je saglasan principima održivog razvoja. U radu je dat osvrt na planski proces, principe definisanja i definisane uslove i mere zaštite životne sredine kojim se umanjuju i sprečavaju potencijalni negativni i povećavaju pozitivni efekti planskih rešenja na životnu sredinu.Industrial zones are affirmed space models for economic development improvement of certain areas. In order to create conditions for development of production and business content, improve the identity and competitiveness of the municipality, increase the level of investment attractiveness and to increase employment, at the end of the 2015, Detailed Regulation Plan (DRP) was initiated for the industrial zone in Vlasotince. Given the content, character and intensity of activity in industrial zones, they are of reduced ecological capacity and can have detrimental effect on the environment. As the strategic assessment of the impact of DRP on the environment was not foreseen and due to the risks from ecological degradation of space, one of the general (project-program) objectives of planning, using, arranging and protecting the planned area is “defining and implementing environmental protection measures”.The planning process that ended with the adoption of the plan in the late 2016, in addition to the expert control which is needed by the Law on planning and construction, is followed by European Union and Government of Switzerland through the European Progress program, which insisted on environmentally friendly principles and models of planning and regulation. The aim of the paper is to show that it is possible to create a plan for economic development that is in accordance with the principles of sustainable development by integrating approach in planning production and business contents and defining more environmentally friendly planning solutions and environmental protection measures. The paper gives an overview of the planning process, the principles of definition and defined conditions and environmental protection measures that reduce and prevent the potential negative and increase the positive effects of planned environmental solutions

Exploring Possibilities of Integrating Version Control Platforms in Higher Education Through GitHub Data Analysis

Working in the software development industry in the modern world cannot be imagined without integration with version control platforms. In addition to allowing copies of the code to be kept, the code versioning platforms provide the ability to control changes that occur in the code itself, so it can be determined which member of the development team made the change and when. This article aims to determine the possibilities of using code versioning platforms in an educational context to provide insights into the students' collaboration and dynamics of developing a software solution. Data was collected on the GitHub platform using the API of a public GitHub organization. Social coding activities performed on the GitHub platform were analyzed using the concepts of Social Network Analysis (SNA). The results of the analysis indicate that the teachers can use data generated on the code versioning platforms o better understand the learning process and monitor the dynamics of project work. In this way, it is possible to follow how each team member contributes to the solution, understand the individual student activities, and monitor the state of the entire project

Creating Adaptive Environment for e-Learning Courses

In this paper we provide an approach to creating adaptive environment for e-learning courses. In the context of e-education, successful adaptation has to be performed upon learners’ characteristics. Currently, modeling and discovering users’ needs, goals, knowledge preferences and motivations is one of the most challenging tasks in e-learning systems that deal with large volumes of information. Primary goal of the research is to perform personalizing of distance education system, according to students’ learning styles. Main steps and requirements in applying business intelligence techniques in process of personalization are identified. In addition, we propose generic model and architecture of an adaptive e-learning system by describing the structure of an adaptive course and exemplify correlations among e-learning course content and different learning styles. Moreover, research that dealt with application of data mining technique in a real e-learning system was carried out. We performed adaptation of our e-learning courses using the results from the research