Public contracting authority may award contracts only to contractors who meet certain qualification criteria for participation in tenders. Such requirements can vary between countries; this paper therefore introduces basic legislation governing this process both in the Czech Republic and Poland. The verification of compliance of these requirements should be made individually for each public procurement procedure which is associated with the need to submit corresponding documents. The aim of the article is to analyse and compare current practice in using qualification criteria for public works contracts in both countries. Information about qualification criteria have been studied on the sample of 345 tenders for public works contracts, in particular for road structures, schools and water and sewage facilities and equipment. Analytical part focuses on the extent of qualification criteria use and discusses their application in the context of ensuring fairness of the competition with regard to non-discriminatory nature of the qualification. Research findings reveal significant disparity between the Czech Republic and Poland in the area of 1) professional and 2) economic and financial qualifications. It has been concluded that the reintroduction of economic and financial qualification criteria in the Czech Republic is justified if used appropriately and according to methodological guidelines. In Poland, the risk of inappropriate use of criteria lies especially in excessive requirements in relation to the volume and nature of contract. Contracting entity is not obliged to describe and demand all the requirements, it is crucial to require just the fulfilment of those criteria which are necessary to assess the ability of contractors to perform the contract. The criteria of an environmental nature are hardly used.
CBA is a very important and strong tool for economic effectiveness evaluation of public investment projects. The outputs (NPV, IRR and BCR) are dependent on correctly set input data. As has been proved recently, an inaccuracy in forecast occurs very often. This paper deals with analysis of particular benefits, which help to create the total benefit for evaluation of road infrastructure projects and megaprojects based on CBA according to the Czech methodology. Moreover, it considers the overall inaccuracy of the project regarding the partial inaccuracies and their shares.Monte Carlo simulation has been applied in order to determine the share of particular benefits and the closest similar probability distribution of these shares to the total benefit of the project. Research results have confirmed that the largest share and the most severe inaccuracy in the total benefit is represented by savings in travel time costs. They have revealed that the share of this benefit has the logistic probability distribution with mean of about 77% and 20.72% of standard deviation. The inaccuracies of the particular benefits have been studied in international research. As a result, very large differences were found. That means that there is still a large space for exploration
This article deals with the partial outputs of large-scale infrastructure project risk assessment, specifically in the field of road and motorway construction. The Department of Transport spends a large amount of funds on project preparation and implementation, which however, must be allocated effectively, and with knowledge of the risks that may accompany them. Therefore, documentation for decision-making on project financing also includes their analysis. This article monitors the frequency of occurrence of individual risk factors within the qualitative risk analysis, with the support of the national risk register, and identifies dependent variables that represent part of the economic cash flows for determining project economic efficiency. At the same time, it compares these dependent variables identified by sensitivity analysis with critical variables, followed by testing the interaction of the critical variables’ effect on the project efficiency using the Monte Carlo method. A partial section of the research was focused on the analysis of the probability distribution of input variables, especially “the investment costs” and “time savings of infrastructure users” variables. The research findings conclude that it is necessary to pay attention to the setting of statistical characteristics of variables entering the economic efficiency indicator calculations, as the decision of whether or not to accept projects for funding is based on them.
The paper deals with economic connections in the complex view of a building life cycle. Approaches for considering individual benefits and costs occurring in connection with building construction, use and demolition are characterized here. The basic approach is the BLCC (Building Life Cycle Costs) method, subsequently supplemented with the LCA (Life Cycle Assessment) method that also provides for environmental impacts. The WLC (Whole Life Costs) method is derived at the end of the paper, comprising all relevant current and future costs and benefits in the building efficiency assessment.
The paper deals with the issue of evaluation of socioeconomic impacts of occurrences emerging from railway infrastructure. The presented research results form part of a broader research subject focusing on the evaluation of the socioeconomic benefits of projects for the implementation of measures aimed at increasing the safety and reliability of railway infrastructure. The research topic addresses a part of the evaluation of railway infrastructure project efficiency within its life cycle using the cost–benefit analysis method. The methodology is based on the description and definition of input variables that are essential for the process of evaluating socioeconomic impacts. It is followed by another important step, which is the analysis of the categories and the number of occurrences, separately, for regional and national lines, and, further, the data is sorted according to whether occurrences emerge at stations or on a wide line. The result of the presented research is an overview of the calculated values of the expected socioeconomic impacts of partial occurrences according to the categories related to the year of operation on the railway infrastructure and the unit of measure. The research team carried out an inquiry into the annual impacts of the subcategories of occurrences related to one railway station and one kilometer of wide line, e.g., for national lines, the impacts of €2922.72/station/year and €41.67/km of wide line/year were determined. The results of the presented research represent important and necessary inputs for the next phase of the research topic, i.e., the evaluation of the socioeconomic benefits of projects increasing the safety and reliability of railway infrastructure.
1 January 2014 in Journal of Applied Engineering Science
Prirodne katastrofe mogu imati katastrofalan učinak na živote ljudi, poslovanje preduzeća i imovinu. Učinci tih katastrofa spadaju u kategoriju prirodnih opasnosti pripadaju standardnim polisama osiguranja; međutim, oni su problematični sa aspekta različitog stepena rizika ugrožavajući osiguranje predmeta na različitim lokacijama.Cilj ovog rada je diskusija i ocena potencijala primene zoniranja rizika u Češkoj na primerima odabranih prirodnih opasnosti od poplave, snežnih lavina, olujnog vetra i oluja sa gradom. Procena se sprovodi korišćenjem dostupnih statističkih podataka i indeksa ozbiljnosti. Zaključeno je da nakon opasnosti od poplave, najveći potencijal za uvođenje zoniranja rizika za osiguranje imaju udružene opasnosti od olujnog vetra i oluja sa gradom. zona; olujni vetar; snežna lavina; rizik; osiguranje; poplave