Zlata Dolaček-Alduk

Methodology and algorithm for asphalt supply chain optimization

In this paper authors suggest and test evolutionary algorithm of multiple criteria solver (MCS) for asphalt supply chain optimization. On the basis of the defined imperfection of the basic mathematical model authors made an algorithm and conducted simulations of transportation problems cases generated from the given realistic input intervals in order to determine the constraints and possibilities for improvement of the original model of the transportation problem of large amounts of asphalt mixture. Results have shown that the suggested model verifies and eliminates the lack of the original model. As well, it is shown in which scenarios of transportation problem and to which extent the suggested methodology contributes to the total transportation costs savings and insurance of the program’s optimality.

Scenario simulation model for optimized allocation of construction machinery

Metode optimizacije imaju veliku važnost pri sužavanju izbora resursa na konacni i pri alokaciji resursa u svim fazama projekata. To se narocito odnosi na složena projektna okruženja gdje je potrebno provesti alokaciju resursa (strojeva) na vise građevinskih projekata u njihovim raznim fazama i prioritetima. U radu se predlaže model koji se zasniva na algoritmu visekriterijske optimizacije i rangiranja scenarija suboptimalnih programa serijskog visekanalnog rada građevinskih strojeva pri konacnom broju strojeva za izbor, te izlucivanje presjeka optimalnih programa i/ili scenarija programa u složenom okruženju.Metode optimizacije imaju veliku važnost pri sužavanju izbora resursa na konacni i pri alokaciji resursa u svim fazama projekata. To se narocito

Impact of changes in a project team structure on the team performance

Structuring a project team is highly sensitive task, so numerous methods which address the problem have emerged. One of the most effective methods is structuring teams by the team members’ affinities and talents presented as team roles. In this paper, we applied Belbin’s Self-Perception Inventory in order to investigate the following questions: Which are the most engaged team roles? How does the absence of the most engaged team members affect the team’s efficiency? How does this change of the team environment affect the member? Our results show that, even in small project teams, changes in team structure will surely have a negative effect on the team’s organizational culture in a short run, and even more importantly they decrease the team’s overall productivity. Also, the changes had a negative effect at the individual level ; teams had trouble integrating new members, and individuals had trouble integrating themselves in new teams.

CONSTRUCTABILITY-BUILDABILITY-IZGRADIVOST

Izgradivost je koncept koji jos nije ostvario znacajniji utjecaj u građevinskoj praksi u Hrvatskoj, kao sto je to slucaj u zemljama poput SAD-a, Kanade, UK i Australije. Ovim se radom nastoji prihvacenu definiciju, ciljeve i output koncepta izgradivosti približiti sudionicima u građevinskim projektima, no i utvrditi sto pojedine interesne strane smatraju kljucnim problemom u eventualnom provođenju koncepta, ali i koji su uzroci problema na relaciji projektiranje-izvođenje-koristenje opcenito.

Managing thermal energy of exhaust gases in the production of asphalt mixtures

Production of construction material is energy demanding and connected with present environmental issues. Hot-mix asphalt production is no exception. F

Contemporary approach to engineering education in the field of transport infrastructure

The current legislative and regulatory framework in the field of higher education as well as the Education, Science and Technology Strategy directs the education of construction engineers towards construction innovations, new design concepts, technologies, and materials according to globally set goal - resource saving. These requirements demand the application of contemporary teaching methods like learning through work, research, putting into function learned concepts, using acquired knowledge and skills in actual examples, learning in the context of division of work and communication with other participants in teaching. This education approach is realized within the course of the Substructure of Transport Infrastructure, compulsory course at the first year of graduate study at the Faculty of Civil Engineering Osijek. The aim of the course is to familiarize students with the design and construction of the lower structure of roads and facilities therein, technology planning and the quality control of works. Familiar, classical performances of lectures and exercises are complemented with workshops, independent work of students in the laboratory, independent work on computer programs, field teaching and participation of practitioners as guest lectures. An important part of the knowledge acquisition is the work in the laboratory where, apart from getting to know how to use the equipment, students perform the standard Proctor’s experiment. That way, they extend the theoretical knowledge of Proctors experiment, remove possible confusion and understand the standards requirements that determine the experiment and make the results relevant. This paper describes the contemporary approach to the education by analyzing the concept of Substructure of Transport Infrastructure course.

Accessing educational approaches to Building Information Modeling (BIM) at construction management master studies in Croatia

Building Information Modelling (BIM) is the current trend of the Architectural, Engineering and Construction (AEC) industry today. For its successful

Scenarijski simulacijski model za optimalnu alokaciju građevinskih strojeva

Metode optimizacije imaju veliku važnost pri sužavanju izbora resursa na konacni i pri alokaciji resursa u svim fazama projekata. To se narocito odnosi na složena projektna okruženja gdje je potrebno provesti alokaciju resursa (strojeva) na vise građevinskih projekata u njihovim raznim fazama i prioritetima. U radu se predlaže model koji se zasniva na algoritmu visekriterijske optimizacije i rangiranja scenarija suboptimalnih programa serijskog visekanalnog rada građevinskih strojeva pri konacnom broju strojeva za izbor, te izlucivanje presjeka optimalnih programa i/ili scenarija programa u složenom okruženju.Metode optimizacije imaju veliku važnost pri sužavanju izbora resursa na konacni i pri alokaciji resursa u svim fazama projekata. To se narocito

ZAVRŠNI RADOVI U VISOKOGRADNJI – PLANIRANJE TROŠKOVA

U clanku se razmatra grupa zavrsnih radova, te utjecaj tih radova na financijsko planiranje građevinskih projekata. Analizirani su izvedeni projek

PLANIRANJE RADOVA MONTAŽE ČELIČNE KONSTRUKCIJE KOD IZVOĐENJA PTC PORTANOVA U OSIJEKU

Izvođenje montažnih radova zahtijeva opsežne pripreme i detaljnu analizu ogranicavajucih faktora u projektu. Kako izvođenje ovih radova ukljuc