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Simulation of line scale contamination in calibration uncertainty model
Marjan Družovec, Bojan Ačko, Andrej Godina, Tatjana Welzer-Družovec, 2008, izvirni znanstveni članek

Opis: Precise calibration of quartz line scales is very important for assuring traceability of microscopic measurements. Very significant influence in calibration uncertainty budget is represented by uncertainty of line centre detection. Line centre is usually detected through video signal processing using different types of algorithms. This paper is presenting calibration procedure that was developed in the Laboratory for Production Measurement at the Faculty of Mechanical Engineering in Maribor. It is focused in uncertainty analysis and especially in the influence of line scale contamination on determination of line centre position. Different types of line scale contamination like dirt spots, scratches, line edge incorrectness, and line intensity were simulated in order to test the ability of the line centre detection algorithm to eliminate such influences from the measurement results.
Ključne besede: line scale, calibration, uncertainty, video-positioning system, simulation
Objavljeno: 31.05.2012; Ogledov: 1061; Prenosov: 71
URL Povezava na celotno besedilo

Evaluating the impact of environmental factors on the international competitiveness of Small and Medium sized Enterprises in the Western Balkans
Goran Andzelic, Vladimir Dzakovic, Bojan Lalić, Danica Zrnic, Iztok Palčič, 2011, izvirni znanstveni članek

Opis: Small and Medium-sized Enterprises (SMEs) with an export potential face significant obstacles in gaining international competitiveness, due to the highly dynamic environment in which they operate. This study evaluates the impact of environmental factors on international competitiveness of the Western Balkans SMEs by identifying the key pairs of environmental factors and factors of international competitiveness, which facilitate an increase in international competitiveness of these firms. The paper also studies the importance of strategic planning and decision making process in the Western Balkans SMEs. Research is based on a questionnaire conducted on the representative sample of SMEs in Serbia, Montenegro and Bosnia and Herzegovina in the period September 2008 to March 2009. The findings of the research indicate which significant environmental factors have an impact on gaining the international competitiveness of the Western Balkans SMEs, therefore offering sound basis for strategic positioning and further gaining of competitive advantage.
Ključne besede: international competitiveness, small and medium enterprises, strategic positioning, environmental factors, Western Balkans
Objavljeno: 01.06.2012; Ogledov: 1619; Prenosov: 20
URL Povezava na celotno besedilo

Stanislav Okorn, 2012, magistrsko delo

Opis: The main purpose of this master thesis was it, to figure out the market position of the Gorenje brand and his main rivals Bosch, Zanussi, Whirlpool and Miele on the Czech, Slovakian, Austrian, Slovenian and Croatian market of household appliances. Firstly branding, brand awareness, positioning and fundamental psychological knowledge in respect to consumer awareness were explained. Afterwards the survey was made. Lastly the analysis and the report of the research were committed. Positioning is a marketing strategy which focuses on a creation of a unique image. The effort should distinguish itself from the offers of the competition to be truly exclusive. Especially among inexperienced consumers brand awareness is of crucial importance. In regard to branding, it can be said that developing a decade- long brand identity can be a very positive situation, to put higher prices due to the tradition on a certain market. Many brands from the 19.and the beginning of 20. century are still existing and performing very well. If we compare the 5 household appliances markets between themselves, then major dissimilarities were visible in the research. The geographical distance cannot be the primary cause of this diverse condition. Language barriers preclude any real spiritual interchange among ordinary people of happening in large extent. Hence the German-speaking Austrians favor German brands, and Slovenians and Croatians prefer Gorenje, due to their common history and similar language. The respondents do not think that any of the brands is of low quality. In the field of consumer perception it could be acknowledged that a brand having the best quality and at the same time offering the cheapest price does not exist in any of the researched markets. Such expectations are also not realistic. In every economical sector brands with higher reputation of quality try to set higher prices, to make by this means higher profits possible.
Ključne besede: branding, brand awareness, positioning, psychological approach to consumer awareness, Gorenje, Bosch, Zanussi, Miele, Whirlpool, household appliances, research, Czech Republic, Slovakia, Austria, Slovenia, Croatia.
Objavljeno: 30.10.2012; Ogledov: 1302; Prenosov: 98
.pdf Celotno besedilo (1,46 MB)

Position control with parameter adaptation for a nano-robotic cell
Gregor Škorc, Jure Čas, Simon Brezovnik, Riko Šafarič, 2011, izvirni znanstveni članek

Opis: This paper describes the development of a nano-assembly system, built up using linear piezo motors. The so-called nano-robotic cell is based on an X/Y manipulator, supported by three serving tables, movable within a Z axis, and aposition controlled using two different types of a bang-bang control methods. The presented application has been developed as a stand-alone application with the LabVIEW Real Time software package, a PCI-7356 servo controller card and a TMCM-090 stepper driver. Our experiments focused on two major problems present during the construction of nano-robotic assembly cells. The first one is a nonlinear characteristic of a linear piezo motor, which makes the use of classical control methods very limited. The second problem appears when a nano-robotic cell needs a bigger working space and at the same time, production demands that the manipulator moves more often over longer distances. In order to position in nano-resolution, the motors have to run at higher resolutions with smaller speeds. Therefore, long distance moves slow down the entire production process. Experiments on this system have shown that positioning within the nano-scale is possible, using a simple control method such as the bang-bang control method. Although positioning using this method is possible, certain limitations and weaknesses exists, making this simple method useless in nano-scale if higher speeds and longer move distances are needed. Certain changes in the basic control algorithm are proposed, which will ensure that the bangbang control method becomes useful within higher speeds and over longer distances. All recommendations are supported and backed- up by practical experimental results.
Ključne besede: nanorobotske celice, nanopozicioniranje, histerezni krmilnik, proizvodnja MEMS, realno-časovni LabView, nano-robot cells, nano-positioning, bang-bang controller, MEMS assembly, LAbVIEW, real time
Objavljeno: 10.07.2015; Ogledov: 711; Prenosov: 77
URL Povezava na celotno besedilo

Indoor mapping and navigation using geographic information systems
Goran Sekirarski, 2016, diplomsko delo/naloga

Opis: This study present proposal work with prototypes that use Radio-Frequency Identification (RFID) and NFC technology for indoor navigation using mobile device with help by using geographic information system to create geotagged maps to building in this diploma thesis. The study used an experimental approach with open source software and hardware engineering tools and technologies which minimized cost. A preliminary experiment with RFID and NFC tools helped to understand the compatibility of certain RFID infrastructure with NFC and helped to determine if and how NFC could be used. The capability of NFC in leveraging its low-cost infrastructure of passive tags, its embedment in mobile devices and the ubiquity of the mobile device provided a cost effective solution with good accuracy.
Ključne besede: Geographic information system, CAD, RFID, Wi-Fi, Near Field Communication, indoor navigation, indoor positioning, NFC Internal, mobile device
Objavljeno: 24.04.2017; Ogledov: 803; Prenosov: 44
.pdf Celotno besedilo (2,75 MB)

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