In the field of spatial management, especially from the point of view of spatial economics, many decisions have long-term effects on the environment. Therefore, it is essential that the boundary ...conditions of the decision-making process are not only transparent, but also aligned with the sustainable development goals. At the same time, road infrastructure represents one of the most complex linear structures in the area, and its comprehensive management should respond to various types of problems, from structured to unstructured, which occur at all levels of decision-making. To solve such problems, management information systems (UIS) can help decision-makers to apply appropriate models and methods during the decision-making process. This paper provides an overview of the different types of UIS that can be used in road infrastructure management. The method of selecting an appropriate UIS and the method of interaction between data and models in such a management system are also discussed.
U pogledu upravljanja prostorom, naročito s aspekta prostorne ekonomije, mnoge odluke koje se pritom donose imaju dugoročne utjecaje na okoliš. Stoga se kao imperativ nameće da rubni uvjeti procesa donošenja odluka budu, ne samo transparentni, već i usklađeni s ciljevima održivog razvoja. Pritom cestovna infrastruktura predstavlja jednu od najsloženijih linijskih građevina u prostoru čije bi cjelovito upravljanje trebalo imati rješenje za najrazličitije tipove problema, od strukturiranih do nestrukturiranih, koji se javljaju na svim razinama odlučivanja. U cilju rješavanja takvih problema upravljački informacijski sustavi (UIS) mogu donositeljima odluka pomoći da primijene odgovarajuće modele i metode tijekom procesa donošenja odluka. U radu je dan pregled različitih tipova UIS-a koji se mogu primijeniti i koristiti u gospodarenju cestovne infrastrukture. Također, u radu se diskutira o načinu odabira primjerenog UIS-a kao i načinu interakcije između podataka i modela u jednom takvom upravljačkom sustavu.
The basic aim of this paper is to research the importance of supply chain optimization in the circumstances of the COVID-19 crisis. The research object is the optimum selection of active participants ...before and after the COVID-19 crisis. The initial hypothesis of this paper is that optimal COVID-19-free supply chains can be formed with a dynamic programming method, the costs of which will be higher than those when this restriction would not exist, but significantly lower than those formed if the optimization principle in the selection of supply chain stakeholders would be neglected. Research results in this scientific discussion paper are based on the analysis and synthesis method, comparative method, and dynamic programming method. The main findings of this paper point to the conclusion that the COVID-19 crisis affected the reduction of goods flow within supply chains, reduction of potential participants in supply chains, reduction of supply chains business safety, and increase in business costs.
The issue of the optimal management of the traffic flow and the ensuring of an adequate number of parking spaces is present in the majority of highly developed urban areas of the European Union, ...including the Republic of Croatia. The formation of an adequate raster of the transport network, conditioned by the historical and existing buildings and areas is an extremely challenging task. Similarly, ensuring an adequate availability of free parking capacities in times of rush hours in the very centres of urban areas is also very demanding. However, what often occurs, even when adequate parking capacities are ensured, is a halt on the input and output terminals of parking lots and garage facilities that are derived by a disproportion of their capacities and traffic needs at a specific time. Precisely for that reason, this paper presents a potential model for determining of an optimal number of input service places (terminals) by using the queuing theory.
The main goal of this academic discussion is to study the effect of subsidies on the offer of sea transport. Research results are based on the method of microeconomic analysis. The knowledge obtained ...through this academic discussion may prove to be of assistance to managers in the area of sea transport in deliberating on more efficient and market-oriented business models. The results of this work reveal that subsidies in sea transport make sense if they contribute to the improvement of the quality of transport or are of help to those for whom they are intended.
The purpose – The purpose of this paper is based on the fact that managing supply chains as a separate area of business management opens up numerous possibilities for improving the competitive ...position of business systems. Supply chain management is increasingly often named as the key offensive factor to increasing the efficacy and effectiveness of economic systems. Design – The purpose of the paper is to point to the fact that hospitality logistics fulfils its basic mission only then when high quality products are delivered to the right place, at the right time, in the appropriate assortment, with the lowest internal and external costs, while doing their maximum to meet the wishes, needs and the demand of the customers. Methodology – The methodology is based on proving the proposed hypothesis: Modern logistics traffic represents a condition sine qua non of rational supply chain management in hospitality. Approach – The approach of the paper is based on the fact that supply chain management represents a broader, strategically significant concept which includes the entire supply chain and has the following goals: customer satisfaction, formulating and implementing appropriate strategies and effective supply chain management. Findings – Although each modality of the traffic logistic system has its own specific mission, they all have a common basic mission: to prepare material goods for manipulation, transport and distribution, the actual transport and distribution of material goods and conducting various logistic activities connected to preparing, manipulating, transporting and distributing material goods. The originality of this research – The originality of this research is revisiting the traffic logistics model as an exclusive factor of the competitive micro-hospitality industry in tourist destinations on a theoretical level, which can be set up via simple, complicated and multimodal traffic logistic models in micro-hospitality industries.
Since the Republic of Croatia is one of the most popular European and world tourist destinations, the aim of this paper is, from the user’s (n = 596) point of view, to research the importance of ...stationary traffic in tourist destinations. The purpose of this paper is to point out the possibilities of improving the tourist destination quality and sustainability through an adequate parking service. In order to corroborate constructed scientific hypotheses, a larger number of scientific methods were used from which a polling method, analysis and synthesis method, descriptive statistics method, t-test, and analysis of variance (ANOVA) should be singled out. The major finding of this paper indicates a relatively big importance of stationary traffic (M = 6.51; SD = 2.21) as an element of tourist destination quality. Moreover, regarding the quality of tourist destination, the results of this paper suggest that the parking space availability is more important than the way parking or parking payment are organized. Between the experienced parking problem in a tourist destination and age on one side and evaluation of the importance of stationary traffic as an element of tourist destination quality on the other side, a statistically important connection was established. Gained knowledge can be particularly helpful to hotel industry managers but also to traffic managers whose duty is to provide an adequate number of parking spaces in tourist destinations.
Contemporary Issues of Urban Mobility Maršanić, Robert; Krpan, Ljudevit
International Journal Vallis Aurea,
12/2015, Letnik:
1, Številka:
2
Journal Article, Paper
Recenzirano
Odprti dostop
Consequences of individual transport rapid development are a threat for modern cities and their population. Actually, transport problems in urban areas mostly derive from inadequate solutions of ...urban mobility by local transport systems. Majority of these problems are caused by extreme density of motor vehicles in urban areas. Increase of motor vehicles is a consequence of income increase and better standard of living. Accordingly, theoretical part of this study will investigate and elaborate on modern problems of urban transport, while the practical part of this work gives an overview of concrete solutions to some of the problems of urban transport on the example of the city of Rijeka in Croatia. Results of research also suggest guidelines for more efficient transport management in cities of similar size.
The basic objective of this scientific paper is to explore in both theory and practice the elasticity of demand in urban traffic. We tried to answer whether the elasticity of demand in urban traffic ...shows a higher intensity of change in the demanded volume of transport services depending on price or income changes. Research results are based on the statistical and mathematical scientific methods. The applicability of the acquired knowledge is tested through a practical research of the elasticity of demand in urban traffic of the city of Rijeka.
The demand for parking services is not a constant one, but rather varies from minimum to maximum. The range between the maximum and minimum demands and the dynamics of changes are the basic factor ...influencing the required size of the parking area capacity and the respective financial effects. The objective of this paper is to demonstrate that the queuing theory can be implemented in defining the optimal number of serving places (ramps) and the required capacity (number of parking spaces) in controlled access parking areas and that the established model can serve in business decision-making in respect to planning and development of the parking area capacity. The presented model has been verified in the example of the “Delta” parking area in the City of Rijeka but this model is particularly valuable as it can be implemented in any controlled access parking areas, i.e., parking areas with toll-bars under current or any other changed future conditions.
KEY WORDS: planning of parking area capacities, optimal parking area capacity, queuing theory, parking area as a queuing system
Optimizacija parkirališnih kapaciteta osobito je važna za gradove u kojima su u gradskome središtu najviše koncentrirani javni, poslovni, turistički i trgovački sadržaji, a slična je situacija i u ...drugim dijelovima grada u kojima postoji izražen nedostatak parkirališnih mjesta. U skladu s time u ovoj se raspravi koncizno razrađuju specifičnosti ponude i potražnje za parkirališnim kapacitetima, prikazaju postojeći teorijski modeli za usklađivanje ponude i potražnje za parkirališnim kapacitetima i prikazuju matematički primjeri za analizu učinkovitosti i djelotvornosti korištenja parkirališnih kapaciteta. Spoznaje navedene u ovoj raspravi osnovne su postavke za učinkovitije upravljanje parkirališnim sustavom i za optimalno dimenzioniranje parkirališnih kapaciteta u gradskim središtima.
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