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1.
Chinese postman problem with priorities (high cost of delays)
Tomaž Kramberger, Janez Žerovnik, 2008, objavljeni znanstveni prispevek na konferenci

Opis: Several real-world problems, such as street sweeping, mail delivery, solid waste collection, salt gritting and snow plowing can be modeled as Chinese postman problems with some additional constraints. In the paper we present a formal definition of the special case of CPP problem where a subset of priority nodes are given that must be visited as soon as possible, i.e. the cost of delays is much bigger than the cost of additional edges traversed. A heuristical algorithm is proposed which gives near optimal feasible solutions.
Ključne besede: combinatorial optimization, discrete optimization
Objavljeno: 05.06.2012; Ogledov: 689; Prenosov: 6
URL Polno besedilo (0,00 KB)

2.
Do managers have enough quality information for decision-making
Bojan Rosi, Tomaž Kramberger, 2007, izvirni znanstveni članek

Opis: Modern complexity of management is associated with important decision making, confronting a great number of useless in- formation. Selection of information - the choice of only quality, i.e. essential ones, is a big problem in managerial decision- making. Implementation of systemic approach i.e. systemic thinking can help dealing with it. It is known that decision-making based only on intuition is insufficient, especially nowadays, in the time of global business. Therefore, managers have to operate with adequate knowledge capital. It is synergetic composition of inborn talents, feelings, abilities as well as gained knowledge and experiences. DNT put this capital knowledge into function of management decision- making, thus easier and holistic information management needed for quality and efficient and successful problem solving. It enables managers to be creative, co-operative and interdisciplinary. It opens possibilities for combination of theory and practice in the decision making processes, as presented in our contribution. Quality, holistic management decision making, create competitive advantages. It can be proved by a practical example of de- cision making about preventive measures in the winter time (roads gritting and ploughing). Great importance of quality, timely and enough holistic information is presented with the model of Short Term Road Ice Prediction, which gives information for quality decision making.
Ključne besede: requisite holism, management, decision-making, systemic thinking, road safety, combinatorial optimization, algorithm
Objavljeno: 10.07.2015; Ogledov: 386; Prenosov: 4
URL Polno besedilo (0,00 KB)

3.
Application of "Einstein's riddle" in solving construction machine allocation problems
Borna Dasović, Marko Čorak, Mario Galić, Uroš Klanšek, 2016, izvirni znanstveni članek

Opis: “Einstein’s riddle” is a popular example of constraints satisfaction problem. Since its introduction, different forms and variations of the riddle have been presented. Regardless of the variant of the riddle, its solution is considered a tough challenge for humans. Researchers have developed and are still developing mathematical models, as well as computational simulation models for solving it. In this article, the authors have modified a previously published mathematical model and developed a computational spreadsheet model for solving the riddle, which provides a unique solution for the riddle. The model was also tested in a small and medium-scaled form for solving constraint satisfaction problems regarding the allocation of construction machines. The authors have also highlighted the model’s limitations for solving such problems and made suggestions regarding necessary modifications in the model to solve more complex problems in the same domain.
Ključne besede: Einstein's riddle, zebra riddle, construction, machine allocation, combinatorial optimization
Objavljeno: 02.08.2017; Ogledov: 49; Prenosov: 1
.pdf Polno besedilo (437,45 KB)

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