Artūras Kaklauskas

Selection of the effective dwelling house walls by applying attributes values determined at intervals

Abstract The higher life quality standards, the changes of habits and new well‐being requirements have led to an increase in the demand for housing. Decision‐making problems in construction management often involve a complex decision‐making process in which multiple requirements and conditions have to be taken into consideration simultaneously. However, not every attribute used in multidimensional scaling is equally and precisely weighted in the real world. Thus quantitative and qualitative assessments are often required to deal with uncertainty, subjective and imprecise data. The accuracy of performance measures in common multi‐attribute methods is usually assumed to be accurate. Grey theory is a new technique for performing prediction, relational analysis and decision‐making in many areas. This paper considers the application of grey relations methodology for defining the utility of an alternative and is proposed as a method of multiple criteria COmplex PRoportional Assessment of alternatives with Grey ...

Defining the utility and market value of a real estate: A multiple criteria approach

This paper considers the application of methodology for the defining the utility and market value of a real estate. The theoretical basis of the methodology is developed. The proposed methods, the method of multiple criteria complex proportional assessment (COPRAS) and the method of defining the utility and market value of a real estate assume the dependence of priority, utility degree and value of investigated versions on a system of criteria adequately describing the alternatives and their direct proportionality to the values and weights of these criteria. The procedure of the defining the utility and market value of a real estate is discussed using an example.

Multicriteria Evaluation of Apartment Blocks Maintenance Contractors: Lithuanian Case Study

The paper presents the comparative analysis of dwelling maintenance contractors aimed at determining the degree of their utility for users and bidding price of services by applying the method of multicriteria complex proportional assessment. To compare the performance of various maintenance contractors, the data from 15 dwelling maintenance organizations was used. A questionnaire survey of dwelling owners was conducted. Contractors were evaluated by a set of 44 criteria characterizing them from various perspectives. The analysis was made taking into account the standpoints of building owners (clients). The initial weights of qualitative criteria were calculated by expert methods. Then they were coordinated with the calculated values of quantitative criteria using the method of multicriteria complex proportional assessment. Multicriteria analysis of the performance of maintenance contractors allows us to determine the importance of particular contractor characteristics for achieving the aim to meet the needs of different participants of the maintenance process.

The web--based real estate multiple criteria negotiation decision support system: A new generation of decision support systems

The negotiations are an inseparable part of the real estate buying and selling process. Currently real estate are characterized by the intensive creation and use of information, knowledge and automation (software, knowledge and decision support systems, neural networks, etc.) applications. It is commonly agreed that a better integration of information, knowledge and automation applications, as well use of voice stress analysis (one of biometric technologies) might be an efficient mean for decision making in real estate negotiations. Voice stress analysis can help the negotiators to distinguish between truth and lies, improve the value of decisions made, significantly speed up real estate sector processes, help to reach a better real estate sales and purchase agreement terms and decrease the overall cost of real estate search and negotiation processes. The authors’ objective is to improve the quality and efficiency of decision support systems. The article analyses scientific research related to negotiations and presents the developed Web--based Real Estate Multiple Criteria Negotiation Decision Support System with integrated voice stress analysis-- a new generation of Decision Support Systems.

Environment factors of energy companies and their effect on value: Analysis model and applied method

Abstract Practical tasks related to property management and disposal in energy companies can be solved only if the actual property value of these companies is known. Traditional practical property valuation methods are based on the analysis of incurred property development costs or financial indicators of activities and are inadequate to account for the influence of environment factors on corporate activities and, in turn, on the value of companies. An analysis model for environment factors affecting energy companies was developed to improve objectiveness of valuation; through analysis of the models components it is possible to analyse external macro, meso and microenviron‐ment of a particular company and to assess efficiency of such environment, as well as the impact of separate factors on value. A criteria system developed using the Analysis Model for Environment Factors and the Decision Support System for Measurement of Effect of Environment Factors on Value of Energy Companies, which was developed by...

The conceptual model of construction and real estate negotiation

Negotiations are common in many activities; the sectors of construction and real estate are not an exception: here the negotiations are an inseparable part of the real estate buying and selling process. The article analyses scientific research related to negotiations and presents the developed model for multiple criteria analysis of construction and real estate negotiations. The analysis of the negotiation processes in construction and real estate and the analysis of the relevant support for decision-making in negotiations must be thorough; it must consider not only economic but also political, legal, socio-cultural, psychological, consumer behaviour, technological, quality of life and other issues. The developed model enables to analyse the combination of the real estate negotiation process, the improvement of its efficiency through use of decision support and voice stress analysis technology and the participating stakeholder groups seeking their goals together with the influencing external macro and micro environment. The paper dwells on the components of this model.

Evaluation of investments into housing renovation

The relevant objectives of a housing strategy is to vouch the effective usage of the present housing, maintenance and renovation. The selection of the means for building and residential environment renovation is dictated by the drawbacks of their present state, out‐of‐date designed decisions, natural physical deterioration. While fixing the optimal renovation prices from the aspect of market value increase, the main indicator, limiting the size of investments into building renovation, is the difference between market values after and before renovation. The difference between 1m-super-2 of market value of a building of new construction and the average price of 1m-super-2 of a building of old construction and the cost of renovation means for it will decide the size of the packet of the investments into renovation.

The construction sector in twenty European countries during the recession 2008–2009 – country ranking by MULTIMOORA

The recession 2008-2009 which influenced the World economy has set new challenges for the development of the European construction sector. In the years 2008--2009 a great number of countries faced serious production and employment breakdowns. The purpose of this paper is to analyze the construction sector from a macroeconomic point of view by comparing construction market variations appeared during the crisis in twenty European countries. Therefore statistical indicators of the construction sector were used and a multiobjective evaluation method under the name of MULTIMOORA was employed. However these traditional indicators of the construction sector deliver an incomplete definition of real situations within the sector as during the recession plenty of constructed buildings remained unsold. Therefore the authors of this article propose a rather complex comparison of construction indicators for different European countries. The case study provides the analysis and calculations performed with the help of the MULTIMOORA method. This method enables the evaluation of European countries in accordance with the investigated objectives and ranges them into different groups according to the objectives set for the construction sector.

A MODEL OF SUSTAINABLE URBAN DEVELOPMENT FORMATION

Life in any modern city of the world is concentrated mostly in a particular ever‐changing environment. Micro, meso and macro environments have a direct impact on sustainable urban development opportunities. This may facilitate sustainable urban development or, on the contrary, it may create constraints. Micro, meso and macro environments must be considered as an aggregate of forces influencing sustainable urban development and combining both the factors that have a direct impact and those whose impact is indirectly. This researches aim was to develop a model of sustainable urban development formation by undertaking a complex analysis of micro, meso and macro environmental factors affecting it and to present recommendations for the increase of its competitive abilities.

Nearly Zero Energy Building Refurbishment

The recast of the Energy Performance of Buildings Directive (EPBD) was adopted by the European Parliament and the Council of the European Union on 19 May 2010. For new buildings, the recast fixes 2 ...