1,720,958 research outputs found
Incorporating alternative rational behaviour theories into urban simulative models
Get PDFWithin urban design and planning, computational models help understand and explore future demand for space in specific locations and situations. In the literature these are a category of urban simulative models classed by this research as real-estate demand models. These models incorporate modules that deal specifically with market forces of demand in an attempt to anticipate human behaviour and response to future intervention and policy change. The current trend of increasingly disaggregated urban scale operational planning support models revolves around microsimulation and agent-based models (ABM) that incorporate individual behaviour. The individual behaviour represented in these real-estate demand models lends heavily on economics theory. The thesis aims to enhance the evaluation and prediction of demand and value associated with specific designs or spaces within the urban environment. It addresses the gap in current urban simulative models, which primarily rely on objective rationality theories to predict individual decision-making regarding land, space, and design choices. The research investigates the potential of new disaggregated behavioural techniques, focusing on improving agent decision-making mechanisms to allow for subjective rationality. This involves exploring innovative theoretical bases and agent architectures to better represent individual behaviours within computational models.
The thesis objectives include a classification of real-estate demand urban simulation models, a systematic review of these models that evaluates current agent architecture usage, the construction of novel computational models for real-estate demand, their validation through human role-playing simulations, and the drawing of conclusions on their capacity to represent subjective rationality. The findings of the initial review indicate that current real-estate models lack certain agent attributes, such as cognitive abilities, collaboration, belief-desire-intention structures, and pro-activeness traits. The research creates three distinct ABMs incorporating different theoretical foundations and agent architectures: Theory of Planned Behaviour with Belief Desire Intention (BDI) agent architecture, Case-Based Decision theory with cognitive agent architecture, and a classic utility maximization model with logic-based architecture. The suitability, strength and weakness as well as external validity for each type of model is analysed against the results of an active role-playing simulation that substitutes the decision-making of computational agents with those of real people in a virtual environment that mimics the one present in the aforementioned three different computer agent simulations.
The research demonstrates the potential of introducing currently lacking agent attributes in the field through innovative theoretical bases and agent architectures, as evidenced by the performance of the created models when compared to the human role-playing experiment. Key findings include the demonstration of the limitations of traditional neo-classical economic theories in urban modelling, and the potential of alternative decision-making theories. Moreover, it emphasises the potential of cognitive agents to improve decision-making processes and design outcomes in urban planning. Additionally, it comments on the need for future research to overcome limitations, such as the lack of real-world representation and the impact of scale on agent decision-making. Overall, this work underscores the importance of considering subjective factors in urban modelling and design to better reflect real-world complexities
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
The effect of the angiotensin II antagonists (telmisartan) on the thrombogenesis and postprandial hypercoagulability of the hypertensive patients
No full textAim: The aim of the study is (i) to show changes in thrombotic parameters (fibrinogen,t-PA and PAI-1) after a rich in lipids meal in healthy volunteers and hypertensivepatients and (ii) to show the results on those parameters after treating the hypertensivepatients for a month with Telmisartan, an angiotensin II antagonist.Methods: It is an open prospective study. We studied 42 hypertensive patients (26 men)and 21 healthy volunteers (17 men). We measured fasting total cholesterol, HDLcholesterol, triglycerides, fibrinogen, t-PA and PAI-1. The same parameters weremeasured in blood 4 hours after a rich in lipids meal. In the hypertensive patients thesame parameters were measured (before and after lipids rich meal) after a monthlytreatment with 80-160mg Telmisartan.Results: Before treatment, the lipids rich meal resulted in both groups (hypertensiveand healthy volunteers) to a significant increase of triglycerides and a significantdecrease of t-PA and PAI-1 only. No significant changes were found (before and after alipids rich meal) after one month treatment of the hypertensive patients withTelmisartan, except the PAI-1 levels which increased significantly after a lipids richmeal.Conclusions: Hypertensive and normotensive subjects showed the same changes inlipids and thrombogenic parameters before and after a lipids rich meal. Thehypertensive patients showed no significant changes of the same parameters after amonthly treatment with Telmisartan, except the PAI-1 levels which increasedsignificantly.Σκοπός: Η παρούσα μελέτη έχει σκοπό να εκτιμήσει (i) την μεταβολή της μεταγευματικής θρομβογένεσης σε υγιείς μάρτυρες σε σχέση με ασθενείς με ήπια υπέρταση σε ότι αφορά το ινωδογόνο, τον t-PA και τον ΡΑΙ-1 (ii) την επίδραση στους ίδιους παράγοντες της θεραπείας για ένα μήνα των υπερτασικών ασθενών με ένα ανταγωνιστή των υποδοχέων της αγγειοτασίνης ΙΙ της τελμισαρτάνης. Μέθοδοι: Είναι μια ανοικτή προοπτική μελέτη. Μελετήθηκαν 42 ασθενείς (26 άνδρες)και 21 υγιείς μάρτυρες (17 άνδρες). Αρχικά σε όλους προσδιορίστηκαν σε νηστεία οι λιπιδαιμικοί παράγοντες (ολική χοληστερόλη, HDL χοληστερόλη και τριγλυκερίδια) και t-PA, ΡΑΙ-1 και ινωδογόνο. Όλες οι παράμετροι προσδιορίστηκαν και 4 ώρες μετά από ένα λιπαρό γεύμα. Στους υπερτασικούς ασθενείς όλες οι παράμετροι προσδιορίστηκαν εκ νέου προ- και μετά το ίδιο λιπαρό γεύμα, και μετά από θεραπεία ενός μηνός με τελμισαρτάνη 80-160mg.Αποτελέσματα: (i) Στους υπερτασικούς και στους υγιείς η χορήγηση του λιπαρού γεύματος προ της θεραπείας είχε παρόμοιο αποτέλεσμα τόσο στις λιπιδαιμικές παραμέτρους (αύξηση τριγλυκεριδίων μόνο) όσο και στις παραμέτρους της θρομβογένεσης (σημαντική μείωση επιπέδων t-PA και ΡΑΙ-1). (ii) Δεν παρατηρήθηκαν στατιστικά σημαντικές μεταβολές στους υπερτασικούς ασθενείς ένα μήνα μετά τη θεραπεία με τελμισαρτάνη σε όλες τις παραπάνω παραμέτρους εκτός από τον ΡΑΙ-1 ο οποίος μεταγευματικά παρουσίασε σημαντική αύξηση.Συμπεράσματα: Οι υπερτασικοί ασθενείς παρουσιάζουν τις ίδιες μεταβολές σε λιπιδαιμικές και θρομβογενείς παραμέτρους προ και μετά ένα λιπαρό γεύμα εκτός του ΡΑΙ-1 ο οποίος μεταγευματικά παρουσίασε σημαντική αύξηση. Η χορήγηση τελμισαρτάνης δεν μετέβαλε τα αποτελέσματα σε υπερτασικούς ασθενείς
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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