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Zakis K.,Vidzeme University of Applied Sciences | Zakis V.,Vidzeme University of Applied Sciences | Arfridsson J.,Lund University
Procedia Computer Science | Year: 2017

The study aims to generate Building system performance design optimization for 11 nearly zero energy new building (nZEnB) types in the cold climate conditions for decision making. The coupling evolutionary algorithms with a building dynamic simulation engine has been applied to reach the "true" optimal solutions. Life cycle cost and performance modulation was carried out in the multi-objective computer model. The calculation of cost optimality was performed on predefined 11 reference building types by taking into account prices as they have been paid by the end consumer including taxes. 960 000 simulation variants were calculated for each building type. This paper proposes coupling of multivariate engine with the Pareto analysis for reduction of costs and energy use, while taking in consideration fiscal and resource economy long term trends as well as fossil energy replacement with the renewable ones from investment perspective. © 2017 The Authors.


Ginters E.,Vidzeme University of Applied Sciences | Martin-Gutierrez J.,University of La Laguna
Procedia Computer Science | Year: 2013

One important component of the gross domestic product (GDP) is logistics services the quality and added value of which is growing due to the application of modern information and communication technologies and electronics. RFID use increases the performance of logistics items identification, however some errors, which could cause substantial damage and losses, remain. The amount of potential errors could be diminished by the additional checking of items using 3D visualisation. The authors researched the use of augmented reality for item visualisation in a warehouse combining AR and RFID solutions. © 2013 The Authors.


Cakula S.,Vidzeme University of Applied Sciences | Salem A.-B.M.,Ain Shams University
WSEAS Transactions on Information Science and Applications | Year: 2013

One of the most important prerequisites in base plan for long-term development of all countries is high education level in society what includes e-learning studies. The time is coming when global tasks could be solved only with communication and learning in world level. Ontological engineering have become an efficient methodology for knowledge representation and management in many domains and tasks. Ontology design, approaches and methodologies are very important issues for building ontologies for specific task. This paper presents the application of the ontological engineering methodology in e-Learning domain. There is the development of two web-based ontologies in the area of artificial intelligence technology. The first one is the "Artificial Intelligence in Education" ontology and the second is 'Expert Systems" ontology. The developed ontologies were encoded in OWL-DL format using the Protégé-OWL editing environment. The ontological engineering methodology is widely used in many domains of computer and information science, cooperative information systems, intelligent information integration, information retrieval and extraction, knowledge representation, and database management systems. Several attempts introducing universal ontology for E-Learning materials have had only modest success.


Fuksa M.,Vidzeme University of Applied Sciences
Procedia Computer Science | Year: 2013

Technology development and the Internet have changed communication processes. By combining two most outstanding modern innovations - the Internet and mobile telephone - the mobile Internet has become one of the most popular mobile services for customers worldwide. In the Latvian mobile services market mobile Internet is still a new service. There have been no studies about tendencies of mobile Internet prevalence and about factors that impact mobile Internet acceptance and usage in Latvia. This paper discusses possibilities to determine the current level of mobile Internet use and acceptance. © 2013 The Authors.


Cakula S.,Vidzeme University of Applied Sciences | Sedleniece M.,Vidzeme University of Applied Sciences
Procedia Computer Science | Year: 2013

A number of recent studies are trying to improve the quality and effectiveness of e-learning using principles of several research areas. This trend of personalization development also appears in e-learning. One of the ideologically closest fields of science is knowledge management (KM). The aim of this article is to identify overlapping points of KM and e-learning phases to improve the structure and transfer of personalized course knowledge using effective methods of ontology and metadata standards. This research offers a theoretical background of knowledge management principle implementation for the development of a practical personalized e-learning model. © 2013 The Authors.


Ginters E.,Vidzeme University of Applied Sciences | Cirulis A.,Vidzeme University of Applied Sciences | Blums G.,Vidzeme University of Applied Sciences
Procedia Computer Science | Year: 2013

The main objective of this paper is to describe the logistics processes improvement by use of AR (augmented reality) and hybrid RFID (Radio-frequency identification) technologies in outdoor environment. Augmented reality and RFID nowadays are well known and widespread technologies. It is possible to achieve functional and perspective system by merging these technologies together. The paper provides theoretical characteristics of logistics, RFID, AR technologies and offers theoretical model for idea implementation and approbation. Model depicts markerless AR-RFID solution for outdoor object tracking and 3D model visualization. Also physical structure and basic calculations are offered to provide necessary fundamentals for development of test platform and pilot product. Provision of outdoor object tracking and 3D model visualization may significantly impact and improve logistics processes in varies of fields. © 2013 The Authors. Published by Elsevier B.V.


Cirulis A.,Vidzeme University of Applied Sciences | Brigmanis K.B.,Vidzeme University of Applied Sciences
Procedia Computer Science | Year: 2013

The aim of this paper is directed in field of architecture and urban planning process improvement, by allowing more precise evaluation of new constructions and objects look and visual influence on environmental surrounding. Nowadays there are several solutions for city visualization in virtual reality which provide wide functionality, including spatial visualization. Despite all modern technologies, which provide photorealistic models on stereoscopic monitors and screens, it is still noticeable barrier among virtual buildings and buildings in real environment. To enhance the immersion level of urban planning solution, main task is to find a way how to use augmented reality to allow urban planning experts move around the city streets and project virtual three dimensional buildings, allowing to see real city and virtual buildings at the same time. © 2013 The Authors. Published by Elsevier B.V.


Biss M.,Vidzeme University of Applied Sciences
Procedia Computer Science | Year: 2015

Nowadays the output of typical car audio player is normally unlikely to generate sufficient power for audio speaker system, so power amplifier must be added to the circuit. The problem is that the technical descriptions and flowcharts usually do not show the crunch capacity and dynamic of amplifier devices. In order to not to blow the amplifier, it is crucial to know the allowed input power, timbre controls and power supply units preventing occurrence of possible power overload. Therefore four-channel (4X100W) power amplifier TK2050 has been selected for this testing purpose. The model of TK2050 electrical components was designed in ISEE Modeling & Simulation Software STELLA dynamically displaying the flow of power, as well as the occurrence of the overload levels depending on the change of input parameters. Following experimenting process led to awareness of input and output relationships in parallel and bridge circuits, element load changes depending on power supply usage, as well as interdependence of input power and EQ settings. © 2015 The Authors. Published by Elsevier B.V.


Cirulis A.,Vidzeme University of Applied Sciences | Ginters E.,Vidzeme University of Applied Sciences
Recent Researches in Automatic Control - 13th WSEAS International Conference on Automatic Control, Modelling and Simulation, ACMOS'11 | Year: 2011

Latest advances in E-learning for training process are offered by virtual and augmented reality (VR/AR) technologies. This offers high level of interaction and wide possibilities of doing experiments. Training scenarios can represent real and abstract three dimensional environments which enable training familiarization without a risk to the trainee and at minimum expense. But nowadays VR/AR training environments does not respect that people have different perception of information, which determines the demand for various forms of presentation of learning material and diverse style of the training sessions. The aim of this paper is to find a way for new method how to dynamically generate training scenarios, taking data form agent-based simulation model and generating correct set of equipment for scenario's operations realization.


Lauberte I.,Vidzeme University of Applied Sciences | Ginters E.,Vidzeme University of Applied Sciences
Recent Researches in Automatic Control - 13th WSEAS International Conference on Automatic Control, Modelling and Simulation, ACMOS'11 | Year: 2011

More and more researchers focus on e-learning systems development, which use appropriate training scenario for each temperament and perception type. Usually e-learning systems use traditional questionnaires to identify temperament type and mode of perception, but interviews are very long and irritating, besides that the applicant can manipulate with the answers. Therefore the authors of the article recommend agent-based simulator TemPerMod.

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