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Activity-based models of travel demand: promises, progress and prospects
Soora Rasouli,Harry Timmermans 서울시립대학교 도시과학연구원 2014 도시과학국제저널 Vol.18 No.1
Because two decades have almost passed since the introduction of activity-based modelsof travel demand, this seems the right time to evaluate progress made in the developmentand application of these models. This invited paper seeks to discuss the initial promisesof activity-based models as an alternative to four-step and tour-based models, summarizeprogress made and identify still unsolved issues that require further research.
Soora Kwon 한국데이타베이스학회 2008 Journal of information technology applications & m Vol.15 No.3
Employing a sample of 126 suppliers in Korean electronic industry, this research examined the effects of institutional environment, social capital and strategic importance in manufacturer-supplier relationships on knowledge sharing. Building on the relational view and knowledge-based theories, this study proposed that these factors facilitate knowledge sharing in manufacturer-supplier relationships and that knowledge mediates satisfaction between manufacturer-supplier relationships for competitive advantage. Results indicate that institutional environment, social capital and strategic importance in manufacturer-supplier relationships are indeed associated with greater knowledge sharing. Inter-firm satisfaction is, in turn, positively associated with knowledge sharing for competitive advantage through technical support, financial support, competence increasing. Further, results provide evidence that knowledge sharing plays a mediating role between institutional environment, social capital, strategic importance and inter-firm satisfaction.
Analysis of Korean Predicative Verb Forms in LAG Framework
( Soora Kim ) 한국언어정보학회 2002 국제 워크샵 Vol.2002 No.-
Korean predicative verb forms obligatorily denote the three categories speech level, mood and sentence type which are not handled by most of the automatic word form recognition systems for this language. These categories are marked by special endings. This paper examines predicative verb forms concentrating on the lexical description of these endings1 in the framework of Left-Associative Grammar (LAG). Additionally this paper suggests a system to analyse verb forms in these aspects. The results of this study have been implemented using Malaga2 and integrated into an automatic word form recognition system for Korean called KMM (Korean Malaga Morphology).
Soora Rasouli,Harry Timmermans,Gamze Dane,Anna Grigolon 서울시립대학교 도시과학연구원 2020 도시과학국제저널 Vol.24 No.3
In recent years, the importance of incorporating attribute uncertainty in models of spatial choice behaviour has been recognized in urban planning research. The majority of studies concerned with decision-making under uncertainty assume some a-priori probability distribution for discrete attribute levels or continuous attribute values. Consequently, it has been implicitly assumed that the decision maker perceives the uncertain attributes as reflected in the presumed discrete or continuous probability distributions. This assumption may, however, not be necessarily true. Capturing the shape of the probability distributions from the decision maker’s perspective likely increases the accuracy of models of decision-making under uncertainty. The aim of the current paper, therefore, is to develop an approach for measuring and modelling individuals’ subjective beliefs about uncertain attributes. The approach is illustrated using beliefs about future mortgage rates as an example. To understand the impact of trends in the data, we experimentally changed the trends in mortgage rates over 20 years with 5 years intervals and analysed the impact of such trends on subjective beliefs of anticipated future mortgages. More specifically, four patterns of the evolution of mortgage rates were created, i.e. monotonically increasing, monotonically decreasing, increasing for the first four intervals and then decreasing, and decreasing for the first four intervals and then increasing. Results suggest that the shape of the pattern (nature of the trend) significantly influences subjective probability assessments of future mortgage rates.
Soora Rasouli,Harry Timmermans 서울시립대학교 도시과학연구원 2013 도시과학국제저널 Vol.17 No.3
No previous studies seem to have examined uncertainty in forecasts of origin destination matrix (OD) tables, predicted by advanced activity-based models of travel demand. This paper documents the design and results of a study on the effects of model uncertainty of the Albatross model on predicted time-dependent OD matrices, for the Rotterdam area,the Netherlands, as a case study. The study involves 1000 runs of model system for a synthetic population of 41,668 individuals. Results indicate that the average uncertainty in the predicted OD matrices due to model uncertainty is 45%, and .13% for destination totals based on these simulation runs. In general, uncertainty is lower for the destinations with higher traffic volumes. Uncertainty in predicted traffic volumes, represented by the cells of the OD matrix, tends to be higher. Finally, for both types of indicators, there is evidence of spatial variability in coefficients of variation, capturing uncertainty in destination totals and traffic volumes. Generally, uncertainty is a non-linear function of the number of samples.
김수라,이익환,이민행 한국독일언어문학회 2004 독일언어문학 Vol.0 No.23
Die systematixhe Beschreibmg der Wortbedeutung ist eine wichtige Gmdlage der einzelsprachlichen sowie kontrastiven Semantik. Sie dient auaerdem als Grundage fisr den Lexikonaufbau in einem Sprachver-arbitungs- oder maschinellen hetzungssystm, in dem das Lexikon zusammen mit der Grammatik-Komponente eine sehr wichtige Rolie spielt. Die vorliegende Arbeit bietet einen Ansatz daftir an, wie die Bedeutung der deutschen Komunikationsverben reprlsentiert w& kann. Zur formalen Darstellung der Verbbedeutung wind die in Van ValinlLa Polla (1997) formulierte sog. Logische Struktur verwendet. Das Deutsche kemt eine Menge Komunikationsverben. Diese Verben unkrliegen keiner nattirlichen Klassifikation; ihre unterschiedlichen Bedeutungsaspekten mussen aus der Situation, die sie bezeichnen, und aus dem Kontext ermittelt werden, in dem sie verwendet werden. Nach Winkler (ZOOlb), die diese Ansicht teilt, entsprechen den unterschiedlichen Bedeutungsaspekten der Kommunikationsverben sprechakttheoretische Begriffe. her Definition folgend modifiziert bzw. erweitert die vorliegende Arbeit die semantische Reprasentation von Kommunikationsverben von Van Valin/La Polla urn Begriffe wie Sprechereinstellung, Sprecherabsicht und propositionalen Gehalt, die unter dem sprechakttheoretischen Begriff "illokutioniiren Kre (engl. illocutionary forces)" zusammengefaBt werden kijnnen. Die in der vorliegenden Arbeit forrnulierte Reprikentation kann fiir die semantische Beschreibung der deutschen Kommunikationsverben, sowie anderer Sprache, eingesetzt werden.