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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Dvimačio giljotininio pjaustymo sprendimo metodai ir jų tyrimas / Solution and analysis of two dimensions guillotinable cut problem

Ragaišis, Vaidotas 11 August 2008 (has links)
Pateikti dažniausiai naudojami algoritmai bei pasiūlyti 6 jų pagerinimai. Pasiūlytos euristikos: dviejų stulpelių euristika(2C), vieno stulpelio euristika(1C), rūšiavimas pagal aukštį(SH), rūšiavimas pagal plotį(SW), rūšiavimas pagal plotą(SS) ir rūšiavimas pagal stačiakampių kvadrantingumą(SSN). Eksperimentui buvo pasirinkti septynių skirtingų klasių Hopper and Turton testiniai duomenys (2002). Eksperimento rezultatai įvertinti F-testu, chi-kvadrato testu bei pjaustymo efektyvumu. / During the period of implementation we implemented a number of level heuristics from the literature and proposed possible improvements to some of these algorithms. 6 algorithms were compared in terms of their solution qualities and their ability to obtain the smallest strip height. The results of the analyses of variance indicate that statistically, there is difference between the mean strip heights obtained by the algorithms at a 5% level of significance. The algorithms were also compared in terms of how close the strip heights obtained were to the optimal solution.
2

Individų pasirinkimų elgsenos finansų kontekste bei požiūrio į perteklinio pasirinkimo situacijas tyrimas / Survey of individuals‘ choices in the context of behavioral finance and attitude towards overchoice

Jankauskaitė, Julė 27 January 2014 (has links)
Magistro baigiamajame analizuoti ir įvertinti pasirinkimai elgsenos finansų kontekste bei požiūris į perteklinio pasirinkimo situacijas. Pirmojoje darbo dalyje pateikiama racionalios ekonominės elgsenos kritika, apžvelgiama elgsenos finansų disciplina kaip alternatyva vyraujančiai paradigmai, apžvelgiamos dažniausiai pasireiškiančios euristikos bei polinkiai. Pristatoma per didelio pasirinkimo problema bei pateikiami susisteminti šios srities tyrimai. Pagrindžiant empirinio tyrimo metodiką, antrojoje darbo dalyje, remiantis užsienio autorių tyrimais, parenkami tikrinami polinkiai bei euristikos, sudaromas klausimynas, atliekamas pilotinis tyrimas, sudaroma tyrimo anketa, vertinamas patikimumas. Trečiojoje dalyje lyginami ir taikant statistinius metodus analizuojami empirinio tyrimo rezultatai, ieškoma reikšmingų sąsajų, pateikiamos įžvalgos, apibendrinami rezultatai ir apžvelgiamos galimos tolimesnių tyrimų kryptys. Galiausiai pateikiamos išvados ir siūlomos būsimų tyrimų kryptys. / Master‘s thesis aims to analyze and evaluate choices in the context of behavioral finance and attitude towards overchoice. In the first part of the thesis, criticism of rational choice theory is provided, behavioral finance is portrayed as an alternative to mainstream finance and the most common heuristics and biases are reviewed. The problem of overchoice is discussed and research in this field is reviewed. In the second part of the thesis, methodology for studying choice in the context of behavioral finance and approach to overchoice is formed: the most probable heuristics and biases are chosen, a pilot questionnaire is composed, a pilot survey is carried our, the pilot questionnaire is updated to obtain the final version, validity of the survey is evaluated. In the third part of the thesis, survey results are analyzed, statistically significant relations are sought, insights are provided, results are summarized and possible directions for future research are outlined.

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