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This article presents architecture of integrated intelligent computer-aided design system for designing mechanical power-transmitting mechanisms (IICADkmps). The system has been developed in C# program environment with the aim of automatising the design process. This article presents a modern, automated approach to design. Developed kmps modules for calculation of geometrical and design characteristics of mechanical power-transmitting mechanisms are described. Three-dimensional geometrical parameter modelling of mechanical power-transmitting mechanisms was performed in the computer-aided design/computer-aided manufacturing/computer-aided engineering system CATIA V5. The connection between kmps calculation modules and CATIA V5 modelling system was established through initial three-dimensional models – templates. The outputs from the developed IICADkmps system generated final three-dimensional virtual models of mechanical power-transmitting mechanisms. Testing of the developed IICADkmps system was performed on friction, belt, cogged (spur and bevel gears) and chain transmitting mechanisms. Also, connection of the developed IICADkmps system with a device for rapid prototyping and computer numerical control machines was made for the purpose of additional testing and verification of practical use. Physical prototypes of designed characteristic elements of mechanical power-transmitting mechanisms were manufactured. The selected test three-dimensional virtual prototypes, obtained as an output from the developed IICADkmps system, were manufactured on the device for rapid prototyping (three-dimensional colour printer Spectrum Z510) and computer numerical control machines. Finally, at the end of the article, conclusions and suggested possible directions of further research, based on theoretical and practical research results, are presented.

V. Dunkić, D. Kremer, R. Grubešić, J. V. Rodriguez, D. Ballian, F. Bogunić, D. Stešević, I. Kosalec et al.

E. Čizmić, Amra Čaušević

The aim of the research is to determine how the Sarajevo Film Festival affects the image of the city of Sarajevo and the satisfaction of tourists at tourist destination city of Sarajevo, as well as to establish the relationship between the Sarajevo Film Festival and tourist perception of Sarajevo. The study used a quantitative approach to research, which included data collection through surveys (Face to Face) of respondents, with the use of a questionnaire, specifically created for this study. The population covered by this research are foreign tourists (people who are not citizens of Bosnia and Herzegovina), who visited Sarajevo in the period of the Sarajevo Film Festival (15-23. August 2014), as well as in the period of one month before and after it was held (July and September 2014).

Nadir Kapetanovic, M. Bibuli, N. Mišković, M. Caccia

Abstract A linear model predictive control (LMPC) based framework is developed for underactuated marine vehicles’ kinematic line following while moving at a constant depth in the presence of disturbance. LMPC is used as a high level controller which sets the reference surge and yaw velocities for the low level PID tracking controllers. Used ACADO optimization toolbox solves the optimal problem at hand in real-time. This framework has shown good results both in simulation environment and in on-sea experiments.

P. Rastović, M. Gojanović, Marina Berberović, M. Pavlović, Josip Lesko, Gordan Galić, M. Pandza

BACKGROUND Whiplash-associated disorders (WAD) result from injury of neck structures that most often occur during traffic accidents as a result of rapid acceleration-deceleration. The dominant symptoms manifest in the musculoskeletal system and include increased fatigue. Because of the frequency of whiplash injuries, a simple, cheap and useful diagnostic tool is needed to differentiate whiplash injury from healthy patients or those faking symptoms. OBJECTIVES To determine muscle fatigue in patients with whiplash injury in six body positions. DESIGN Analytical cross-sectional study. SETTING Emergency center, university hospital. PATIENTS AND METHODS We studied patients with whiplash injury from vehicular traffic accidents who presented to the emergency center within 6 hours of sustaining the injury. We determined whiplash injury grade according to the Quebec Task Force (QTF) classification and measured isometric muscle endurance in six different body positions. Control subjects for each patient were matched by age, gender and anthropomorphic characteristics. Cut-off values were determined to distinguish patients with whiplash injury from controls and for determination of injury grade. MAIN OUTCOME MEASURE(S) QTF grade, time to muscle fatigue in seconds. RESULTS From September 2013 to September 2016, we enrolled 75 patients with whiplash injury and 75 matching control subjects. In all six positions, the patients with whiplash injury felt muscle fatigue faster than equivalent controls (P<.05) and the time to onset of muscle fatigue decreased with increasing injury grades in all six positions. Assignment to the patient or control group and to injury grade could be predicted with more than 90% accuracy on the basis of time to muscle fatigue. The most efficient position was the highest injury grade, by which 99.9% of the patients were accurately categorized. Isometric muscle endurance correlated with whiplash injury grade in all six positions (P<.01). CONCLUSION Under clinical conditions, muscle endurance and the appearance of isometric muscle fatigue during testing can be a useful indicator of whiplash injury and grade. LIMITATIONS The size of the sample was small. An objective parameter such as electromyography is needed to confirm isometric muscle fatigue.

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