In the master final work problems of real investments validity assessment are formulated, theoretical methods of assessment of investments efficiency of Lithuanian and foreign authors are analyzed and systemized, advantages and disadvantages of separate methods evaluating real investments are presented, the position of the governmental policy concerning investment issues and legal regulation of this sphere are analyzed. Planned investments of “PAJŪRIO ALKA“ JSC were analyzed using the methods of investment payback period, profitability of the total invested capital and share capital, internal rate of return, net present value and employing their modified forms. The analysis of methods confirms the author’s formulated hypothesis of the scientific research that not separate assessed indicators influence decisions made in the company concerning investments validity, but consistency of calculated indicators and their reciprocity. Furthermore, the model of assessment of investment projects inside the company based upon consistency of coordination of the main financial efficiency assessment indicators is proposed.

Darbo tikslas – įvertinti Marijampolės miesto centrinės dalies motorizuotos transporto infrastruktūros plėtros galimybes panaudojant transporto srautų modeliavimo programinę įrangą. Siekiant šio tikslo buvo apžvelgta pasaulio miestų susisiekimo sistemos plėtros tendencijos ir problematika, apžvelgtos transporto politikos susisiekimo kokybei gerinti, pasaulyje naudojama eismo modeliavimo įranga, išanalizuota Marijampolės miesto susisiekimo sistema. Pagal augantį miesto automobilizacijos lygį buvo prognozuotas automobilizacijos lygis 2017 metams. Buvo pasiūlyti 8 centrinės mieto dalies plėtros variantai. Šių variantų modeliavimo rezultatai buvo palyginti tarpusavyje, buvo pasirinkti 2 geriausi variantai ir atliktas jų ekonominis vertinimas. / The aim of the work: with the help of traffic modeling program to evaluate the Marijampolė city central part development scenarios. For such aim were analyzed world city’s transport system development trends and problems, transport policies to improve level of service, transport modeling programs and Marijampolė city transport system. Forecast of traffic flows prepared till 2017. During analysis 8 solutions were prepared how to improve level of service in the central part of the Marijampolė. According to traffic flows analysis with the “VISUM” program was made: basic model and 8 more models-solutions. Modeling results were compared and two best solutions were chosen to prepare economic estimations.

In final master work “Investment planning and analysis” there was analyzed and systemized conceptual and practical researches of investment analysis of Lithuanian and foreign authors. When analyzing capital investment effectiveness, it is very important to use various methods in complex, not separately. There was performed analysis of investment project of JSC “Lamega”, also there was calculated indicators of investment effectiveness, main factors, which influence final results of a project, were defined, uncertainty and possibilities of the project were evaluated by using Black-Scholes real options evaluation model. Hypothesis, that investment decision depends not on meaning of separate indicator, but their sequence and reciprocity.