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Texas Christian University
1.
Savage, Leslie James.
Evaluation research using log-linear analysis of contingency tables / by Leslie James Savage, Jr.
Degree: 1980, Texas Christian University
URL: https://repository.tcu.edu/handle/116099117/34733
Subjects/Keywords: Log-linear models
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APA (6th Edition):
Savage, L. J. (1980). Evaluation research using log-linear analysis of contingency tables / by Leslie James Savage, Jr. (Thesis). Texas Christian University. Retrieved from https://repository.tcu.edu/handle/116099117/34733
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Savage, Leslie James. “Evaluation research using log-linear analysis of contingency tables / by Leslie James Savage, Jr.” 1980. Thesis, Texas Christian University. Accessed March 08, 2021.
https://repository.tcu.edu/handle/116099117/34733.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Savage, Leslie James. “Evaluation research using log-linear analysis of contingency tables / by Leslie James Savage, Jr.” 1980. Web. 08 Mar 2021.
Vancouver:
Savage LJ. Evaluation research using log-linear analysis of contingency tables / by Leslie James Savage, Jr. [Internet] [Thesis]. Texas Christian University; 1980. [cited 2021 Mar 08].
Available from: https://repository.tcu.edu/handle/116099117/34733.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Savage LJ. Evaluation research using log-linear analysis of contingency tables / by Leslie James Savage, Jr. [Thesis]. Texas Christian University; 1980. Available from: https://repository.tcu.edu/handle/116099117/34733
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Northeastern University
2.
Bosowski, Nicholas Michael.
Linear and log-linear models for count time series analysis.
Degree: MS, Department of Electrical and Computer Engineering, 2016, Northeastern University
URL: http://hdl.handle.net/2047/D20236843
► Modeling count data is a topic of interest in many applications. Traditional time series assume continuous data with a normal distribution, which is not appropriate…
(more)
▼ Modeling count data is a topic of interest in many applications. Traditional time series assume continuous data with a normal distribution, which is not appropriate for count data. In this thesis we focus on linear and log-linear count models with Poisson and NB2 distributions with or without zero-inflation. These models provide a parsimonious manner to account for serial correlation in count data through the conditional mean and distribution. Current research on these models provides theoretical results for model analysis, estimation, and use.; This thesis provides a unified framework of these models based on current literature . We also provide several new results. First, we develop a simple heuristic evaluation of the Poisson model. This approximate marginal distribution helps visualize the range of values the Poisson model achieves. It can also be used as a horizon forecast when the present has little influence on the forecast. We exploit similarities between these and ARMA models to find bounds on stationarity of the NB2 linear model, ensuring that estimation techniques are bounded.; We also extend estimation methods for these models via conditional maximum likelihood estimation. This estimation method has been studied for the Poisson models by [1, 2]. We use this technique to develop estimators of the NB2 models as well as zero-inflated Poisson and NB2 models. We evaluate the estimators for consistency and asymptotic performance and find they perform well. We compare the estimator for the NB2 model to the technique of quasi maximum likelihood estimation [3] and find they perform comparably. In addition, we develop approximations for the limiting information matrix for two cases of the Poisson linear model. We evaluate performance of these approximations and use them to develop a better understanding of how true parameter values affect estimation.; Finally, we study the use of linear and log-linear models for forecasting. We focus predominantly on probabilistic forecasts discussing theoretical framework as well as practical use. We then apply these methods to a real world data set to demonstrate how the models handle the real world data.
Subjects/Keywords: linear count models; log-linear count models; count data; Poisson model
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APA ·
Chicago ·
MLA ·
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APA (6th Edition):
Bosowski, N. M. (2016). Linear and log-linear models for count time series analysis. (Masters Thesis). Northeastern University. Retrieved from http://hdl.handle.net/2047/D20236843
Chicago Manual of Style (16th Edition):
Bosowski, Nicholas Michael. “Linear and log-linear models for count time series analysis.” 2016. Masters Thesis, Northeastern University. Accessed March 08, 2021.
http://hdl.handle.net/2047/D20236843.
MLA Handbook (7th Edition):
Bosowski, Nicholas Michael. “Linear and log-linear models for count time series analysis.” 2016. Web. 08 Mar 2021.
Vancouver:
Bosowski NM. Linear and log-linear models for count time series analysis. [Internet] [Masters thesis]. Northeastern University; 2016. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2047/D20236843.
Council of Science Editors:
Bosowski NM. Linear and log-linear models for count time series analysis. [Masters Thesis]. Northeastern University; 2016. Available from: http://hdl.handle.net/2047/D20236843

University of Newcastle
3.
Zafar, Sidra.
Non-iterative estimation methods for ordinal log-linear models.
Degree: PhD, 2017, University of Newcastle
URL: http://hdl.handle.net/1959.13/1347443
► Research Doctorate - Doctor of Philosophy (PhD)
Log-linear modelling has proven to be a rich and diverse area of research in categorical data analysis since…
(more)
▼ Research Doctorate - Doctor of Philosophy (PhD)
Log-linear modelling has proven to be a rich and diverse area of research in categorical data analysis since the 1950s. However, until the mid-1970s, the log-linear model has only considered nominal variables and did not take into consideration the structure of ordered categories. So, it was during this time that ordinal loglinear models became popular. While such models were not commonly applied at the time, they grew in use in most fields of research, especially in the social sciences. Of all of the ordinal categorical data analytic techniques that are now available, ordinal log-linear models are amid the most widely used. Traditionally, the parameters from such models have been estimated using iterative algorithms including the Newton-Raphson method and iterative proportional fitting. However, issues such as the choice of poor initial values, poor (or no) rates of convergence, excessively high number of iterations and the size of the contingency table all can hamper the estimation of the parameters using these iterative techniques. For the analysis of the association between the categorical variables of a two-way and three-way contingency table, more recent advances have been proposed for parameter estimation for ordinal log-linear models. These advances include non-iterative estimation techniques that give numerically similar estimates to those obtained using conventional iterative methods. These recently introduced non-iterative estimation methods provide an alternative, and interestingly, closed-form estimates which do not require any iteration to estimate the association parameters of the ordinal log-linear models.
Advisors/Committee Members: University of Newcastle. Faculty of Science, School of Mathematical and Physical Sciences.
Subjects/Keywords: log-linear models; contingency tables; non-iterative estimation; Newton Unidimensional method; linear-by-linear
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zafar, S. (2017). Non-iterative estimation methods for ordinal log-linear models. (Doctoral Dissertation). University of Newcastle. Retrieved from http://hdl.handle.net/1959.13/1347443
Chicago Manual of Style (16th Edition):
Zafar, Sidra. “Non-iterative estimation methods for ordinal log-linear models.” 2017. Doctoral Dissertation, University of Newcastle. Accessed March 08, 2021.
http://hdl.handle.net/1959.13/1347443.
MLA Handbook (7th Edition):
Zafar, Sidra. “Non-iterative estimation methods for ordinal log-linear models.” 2017. Web. 08 Mar 2021.
Vancouver:
Zafar S. Non-iterative estimation methods for ordinal log-linear models. [Internet] [Doctoral dissertation]. University of Newcastle; 2017. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1959.13/1347443.
Council of Science Editors:
Zafar S. Non-iterative estimation methods for ordinal log-linear models. [Doctoral Dissertation]. University of Newcastle; 2017. Available from: http://hdl.handle.net/1959.13/1347443

University of Tasmania
4.
Canary, JD.
Grouped goodness-of-fit tests for binary regression models.
Degree: 2013, University of Tasmania
URL: https://eprints.utas.edu.au/18229/1/front –
Canary-thesis.pdf
;
https://eprints.utas.edu.au/18229/2/Whole-Canary-thesis.pdf
How well a proposed regression model fits the observed outcome data is a critical question. The
answer may influence model selection, and the conclusions drawn. Summary goodness-of-fit
(GOF) statistics are used to assess model fit.
Subjects/Keywords: Goodness-of-fit test; Generalized Linear Models; Tsiatis; Hosmer-Lemeshow; Pigeon-Heyse; Score test;
non-canonical links; pro bit; log-log; complementary log-log; log binomial
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Canary, J. (2013). Grouped goodness-of-fit tests for binary regression models. (Thesis). University of Tasmania. Retrieved from https://eprints.utas.edu.au/18229/1/front – Canary-thesis.pdf ; https://eprints.utas.edu.au/18229/2/Whole-Canary-thesis.pdf
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Canary, JD. “Grouped goodness-of-fit tests for binary regression models.” 2013. Thesis, University of Tasmania. Accessed March 08, 2021.
https://eprints.utas.edu.au/18229/1/front – Canary-thesis.pdf ; https://eprints.utas.edu.au/18229/2/Whole-Canary-thesis.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Canary, JD. “Grouped goodness-of-fit tests for binary regression models.” 2013. Web. 08 Mar 2021.
Vancouver:
Canary J. Grouped goodness-of-fit tests for binary regression models. [Internet] [Thesis]. University of Tasmania; 2013. [cited 2021 Mar 08].
Available from: https://eprints.utas.edu.au/18229/1/front – Canary-thesis.pdf ; https://eprints.utas.edu.au/18229/2/Whole-Canary-thesis.pdf.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Canary J. Grouped goodness-of-fit tests for binary regression models. [Thesis]. University of Tasmania; 2013. Available from: https://eprints.utas.edu.au/18229/1/front – Canary-thesis.pdf ; https://eprints.utas.edu.au/18229/2/Whole-Canary-thesis.pdf
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
5.
Noor, Farhana.
Comparison between quantile regression technique and generalised additive model for regional flood frequency analysis.
Degree: 2018, Western Sydney University
URL: http://hdl.handle.net/1959.7/uws:51453
► Design flood estimates are needed for the planning and design of hydraulic structures, and in many other water and environmental management tasks. Design flood estimation…
(more)
▼ Design flood estimates are needed for the planning and design of hydraulic structures, and in many other water and environmental management tasks. Design flood estimation is a challenging task, in particular for poorly gauged and ungauged catchments. In Australia, there are numerous ungauged catchments; for these catchments Regional Flood Frequency Analysis (RFFA) techniques are generally adopted to estimate design floods. Most of the RFFA techniques previously adopted in Australia are based on rational method and/or
linear modelling approaches. However, with the recent advancements in statistical computation methods, there are several other techniques becoming popular gradually in hydrological applications which can account for non-linearity in the rainfall-runoff processes. Generalized additive model (GAM) is one of the recently developed techniques which can deal with the non-linearity, which has not been widely explored in hydrological research, in particular for the RFFA problems. Therefore, this research is devoted to examining the applicability of GAM in RFFA and compare its performances with one of the most widely used
linear RFFA technique (
log-log
linear model). This study is carried out using data from 114 small to medium sized gauged catchments of Victoria, Australia. This data has primarily been sourced from Australia Rainfall Runoff (ARR), Project 5 Regional Flood Methods. This study is based on a number of alternative groups, e.g. a combined group consisting of all the 114 catchments and sub-groups formed based on cluster analysis. Four regions are formed using hierarchical and k-means clustering techniques. All the five groups are used for developing
log-log
linear models and GAM based
models. The predictor variables for each of these
models are selected based on the statistical significance of the predictor variables, i.e. p-statistics. For validation of the developed prediction
models, a 10-fold cross validation method is adopted. The performances of the prediction
models for the alternative
models are assessed using a number of statistical measures including coefficient of determination (R2), median relative error (RE) and median Qpred/Qobs ratio values. It is found that, none of the
models from the combined group and clustering groups perform equally well for the six average recurrence intervals (ARIs) (2, 5, 10, 2, 50 and 100 years) with respect to the selected statistical measures. Overall,
log-log
linear model from clustering group A1 is found to be the best performing model. GAM based RFFA
models perform better for smaller ARIs (i.e., 2, 5 and 10 years); which is as expected since the hydrological behaviour of catchments for smaller ARIs is generally more non-
linear, e.g. higher loss and hence rainfall produces lower runoff for more frequent events. Some predictor variables (e.g., evap), which were not adopted in the previous RFFA
models, in Australia are found to be significant in the GAM based RFFA
models. Overall, it is found that consideration of non-linearity via GAM can add new…
Advisors/Committee Members: Western Sydney University. Centre for Infrastructure Engineering (Host institution).
Subjects/Keywords: flood forecasting; mathematical models; Victoria; quantile regression; linear models (statistics); log-linear models; evaluation; Thesis (M.Phil.) – Western Sydney University, 2018
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Noor, F. (2018). Comparison between quantile regression technique and generalised additive model for regional flood frequency analysis. (Thesis). Western Sydney University. Retrieved from http://hdl.handle.net/1959.7/uws:51453
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Noor, Farhana. “Comparison between quantile regression technique and generalised additive model for regional flood frequency analysis.” 2018. Thesis, Western Sydney University. Accessed March 08, 2021.
http://hdl.handle.net/1959.7/uws:51453.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Noor, Farhana. “Comparison between quantile regression technique and generalised additive model for regional flood frequency analysis.” 2018. Web. 08 Mar 2021.
Vancouver:
Noor F. Comparison between quantile regression technique and generalised additive model for regional flood frequency analysis. [Internet] [Thesis]. Western Sydney University; 2018. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1959.7/uws:51453.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Noor F. Comparison between quantile regression technique and generalised additive model for regional flood frequency analysis. [Thesis]. Western Sydney University; 2018. Available from: http://hdl.handle.net/1959.7/uws:51453
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
6.
Πολέμης, Μιχαήλ.
Επίδραση της φορολογίας στην προσαρμογή της ενεργειακής ζήτησης στους στόχους του πρωτοκόλλου του Κιότο: εμπειρική ανάλυση για την Ελλάδα.
Degree: 2005, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ)
URL: http://hdl.handle.net/10442/hedi/21938
► In this dissertation, the effects, accruing from the imposition of energy taxes levied invarious sectors (residential, transportation and industrial sector) in Greece, are beingexamined. For…
(more)
▼ In this dissertation, the effects, accruing from the imposition of energy taxes levied invarious sectors (residential, transportation and industrial sector) in Greece, are beingexamined. For this purpose, we used partial equilibrium models and cointegration techniquesin order to assess the energy demand for the period 1970-2003. On the basis of theseestimates (elasticities) we make forecasts for energy demand and carbon dioxide (CO2)emissions in the coming years (2004-2015).The empirical results show that the harmonization of the energy taxes to the minimumproposed levels as suggested by the European Directive 2003/96/EC (reference scenario)implies a significant increase of total CO2 emissions which may lead to a deviation from theKyoto target (+25% for the period 2008-2012). The results do not alter substantially if taxesare equal to the European Union average level (optimistic scenario). However, the restrictionof CO2 emissions to the Kyoto target can be achieved only by the implementation of severetaxation (environmental scenario). These empirical findings indicate that environmentaltaxation can be used as an instrument for combating CO2 emissions only with a combinationof other environmental (market based) instruments (i.e tradeable permits, subsidies, fees,administrative decisions, regulatory measures, etc).The The contribution of this thesis to the economic science is related to: i) the extension of a loglinearpartial equilibrium model (using new variables, capturing the impact of natural gaseither with the inclusion of a broken trend from 1997 onwards or with the use of dummyvariables, assessing the impact of comparative analysis of alternative econometriccointegration techniques) ii) the fully harmonization of the level of energy taxation in Greeceto the proposed levels by the European Directive (2003/96/EC).
Η παρούσα διατριβή, εξετάζει το ρόλο και τη σημασία των περιβαλλοντικών φόρων στην κατανάλωση ενέργειας σε διάφορους τομείς της ελληνικής οικονομίας (οικιακός, μεταφορικός και βιομηχανικός τομέας). Για το σκοπό αυτό εκτιμήθηκε μέσω υποδειγμάτων μερικής ισορροπίας, η τομεακή ζήτηση ενέργειας για τη χρονική περίοδο 1970-2003. Οι εκτιμήσεις που προέκυψαν ως προς το μέγεθος των ελαστικοτήτων ενέργειας, χρησιμοποιήθηκαν σε ένα δεύτερο στάδιο για τη διεξαγωγή προβλέψεων σχετικά με τη διαχρονική εξέλιξη της κατανάλωσης ενέργειας και των εκπομπών διοξειδίου του άνθρακα την περίοδο 2004-2015. Από την ανάλυση των αποτελεσμάτων προκύπτει ότι η εναρμόνιση των περιβαλλοντικών φόρων ενέργειας στα ελάχιστα επίπεδα που θέτει η Κοινοτική Οδηγία 2003/96 (σενάριο αναφοράς), συνεπάγεται σημαντική αύξηση των συνολικών εκπομπών διοξειδίου του άνθρακα και κατά συνέπεια απόκλιση από το στόχο του Κιότο (+25% την περίοδο 2008-2012). Ανάλογα ευρήματα προκύπτουν και από τη σύγκλιση της ελληνικής ενεργειακής φορολογικής πολιτικής στο μέσο ευρωπαϊκό επίπεδο (αισιόδοξο σενάριο). Αντιθέτως, μόνο η επιβολή πολύ υψηλής φορολόγησης (περιβαλλοντικό σενάριο) τείνει στον περιορισμό των εκπομπών CO2 στα ανεκτά επίπεδα του Κιότο. Τα…
Subjects/Keywords: Περιβαλλοντικοί φόροι; Κατανάλωση ενέργειας; Πρωτόκολλο του Κιότο; Ελαστικότητες ενέργειας; Εκπομπές διοξειδίου του άνθρακα; Κοινοτική οδηγία 2003/96/ΕΚ; Συνολοκλήρωση; Γραμμικά λογαριθμικά υποδείγματα μερικής ισορροπίας; Energy taxation; Energy consumption; Kyoto protocol; Energy elasticities; Carbon dioxide emissions; European directive 2003/96/EC; Cointegration; Log-linear partial equilibrium models
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Πολέμης, . . (2005). Επίδραση της φορολογίας στην προσαρμογή της ενεργειακής ζήτησης στους στόχους του πρωτοκόλλου του Κιότο: εμπειρική ανάλυση για την Ελλάδα. (Thesis). National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Retrieved from http://hdl.handle.net/10442/hedi/21938
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Πολέμης, Μιχαήλ. “Επίδραση της φορολογίας στην προσαρμογή της ενεργειακής ζήτησης στους στόχους του πρωτοκόλλου του Κιότο: εμπειρική ανάλυση για την Ελλάδα.” 2005. Thesis, National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ). Accessed March 08, 2021.
http://hdl.handle.net/10442/hedi/21938.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Πολέμης, Μιχαήλ. “Επίδραση της φορολογίας στην προσαρμογή της ενεργειακής ζήτησης στους στόχους του πρωτοκόλλου του Κιότο: εμπειρική ανάλυση για την Ελλάδα.” 2005. Web. 08 Mar 2021.
Vancouver:
Πολέμης . Επίδραση της φορολογίας στην προσαρμογή της ενεργειακής ζήτησης στους στόχους του πρωτοκόλλου του Κιότο: εμπειρική ανάλυση για την Ελλάδα. [Internet] [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2005. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10442/hedi/21938.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Πολέμης . Επίδραση της φορολογίας στην προσαρμογή της ενεργειακής ζήτησης στους στόχους του πρωτοκόλλου του Κιότο: εμπειρική ανάλυση για την Ελλάδα. [Thesis]. National and Kapodistrian University of Athens; Εθνικό και Καποδιστριακό Πανεπιστήμιο Αθηνών (ΕΚΠΑ); 2005. Available from: http://hdl.handle.net/10442/hedi/21938
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Southampton
7.
Michaelides, Danius Takis.
Exact tests via complete enumeration : a distributed computing approach.
Degree: PhD, 1997, University of Southampton
URL: https://eprints.soton.ac.uk/250749/
;
https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242864
► The analysis of categorical data often leads to the analysis of a contingency table. For large samples, asymptotic approximations are sufficient when calculating p-values, but…
(more)
▼ The analysis of categorical data often leads to the analysis of a contingency table. For large samples, asymptotic approximations are sufficient when calculating p-values, but for small samples the tests can be unreliable. In these situations an exact test should be considered. This bases the test on the exact distribution of the test statistic. Sampling techniques can be used to estimate the distribution. Alternatively, the distribution can be found by complete enumeration. A new algorithm is developed that enables a model to be defined by a model matrix, and all tables that satisfy the model are found. This provides a more efficient enumeration mechanism for complex models and extends the range of models that can be tested. The technique can lead to large calculations and a distributed version of the algorithm is developed that enables a number of machines to work efficiently on the same problem.
Subjects/Keywords: 519.5; Contingency table; Log-linear models
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Michaelides, D. T. (1997). Exact tests via complete enumeration : a distributed computing approach. (Doctoral Dissertation). University of Southampton. Retrieved from https://eprints.soton.ac.uk/250749/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242864
Chicago Manual of Style (16th Edition):
Michaelides, Danius Takis. “Exact tests via complete enumeration : a distributed computing approach.” 1997. Doctoral Dissertation, University of Southampton. Accessed March 08, 2021.
https://eprints.soton.ac.uk/250749/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242864.
MLA Handbook (7th Edition):
Michaelides, Danius Takis. “Exact tests via complete enumeration : a distributed computing approach.” 1997. Web. 08 Mar 2021.
Vancouver:
Michaelides DT. Exact tests via complete enumeration : a distributed computing approach. [Internet] [Doctoral dissertation]. University of Southampton; 1997. [cited 2021 Mar 08].
Available from: https://eprints.soton.ac.uk/250749/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242864.
Council of Science Editors:
Michaelides DT. Exact tests via complete enumeration : a distributed computing approach. [Doctoral Dissertation]. University of Southampton; 1997. Available from: https://eprints.soton.ac.uk/250749/ ; https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.242864

University of Manchester
8.
Klein, Tania S.
The Development and Application of Two-Time-Scale
Turbulence Models for Non-Equilibrium Flows.
Degree: 2012, University of Manchester
URL: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:154700
► The reliable prediction of turbulent non-equilibrium flows is of high academic and industrial interest in several engineering fields. Most turbulent flows are often predicted using…
(more)
▼ The reliable prediction of turbulent
non-
equilibrium flows is of high academic and industrial interest
in several engineering fields. Most turbulent flows are often
predicted using single-time-scale Reynolds-Averaged-Navier-Stokes
(RANS) turbulence
models which assume the flows can be modelled
through a single time or length scale which is an admittedly
incorrect assumption. Therefore they are not expected to capture
the lag in the response of the turbulence in non-
equilibrium flows.
In attempts to improve prediction of these flows, by taking into
consideration some features of the turbulent kinetic energy
spectrum, the multiple-time-scale
models arose. A number of
two-scale
models have been proposed, but so far their use has been
rather limited.This work thus focusses on the development of
two-time-scale approaches. Two two-time-scale
linear-eddy-viscosity
models, referred to as NT1 and NT2
models, have been developed and
the initial stages of the development of two-time-scale
non-
linear-eddy-viscosity
models are also reported. The
models'
coefficients have been determined through asymptotic analysis of
decaying grid turbulence, homogeneous shear flows and the flow in a
boundary layer in local
equilibrium. Three other important features
of these
models are that there is consistent partition of the large
and the small scales for all above limiting cases, model
sensitivity to the partition and production rate ratios and
sensitivity of the eddy viscosity sensitive to the mean strain
rates.The
models developed have been tested through computations of
a wide range of flows such as homogeneous shear and normally
strained flows, fully developed channel flows,
zero-pressure-gradient, adverse-pressure-gradient,
favourable-pressure-gradient and oscillatory boundary layer flows,
fully developed oscillatory and ramp up pipe flows and steady and
pulsated backward-facing-step flows.The proposed NT1 and NT2
two-scale
models have been shown to perform well in all test cases,
being, among the benchmarked
models tested, the
models which best
performed in the wide range of dimensionless shear values of
homogeneous shear flows, the only
linear-eddy-viscosity
models
which predicted well the turbulent kinetic energy in the normally
strained cases and the only
models which showed satisfactory
sensitivity in predicting correctly the reattachment point in the
unsteady backward facing step cases with different forcing
frequencies. Although the development of the two-time-scale
non-
linear-eddy-viscosity
models is still in progress, the interim
versions proposed here have resulted in predictions of the Reynolds
normal stresses similar to those of much more complex
models in all
test cases studied and in predictions of the turbulent kinetic
energy in normally strained flows which are better than those of
the other
models tested in this study.
Advisors/Committee Members: CRAFT, TIMOTHY TJ, Iacovides, Hector, Craft, Timothy.
Subjects/Keywords: two-time-scale turbulence models; non-equilibrium flows; linear-eddy-viscosity models; non-linear-eddy-viscosity models; turbulent kinetic energy spectrum
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Klein, T. S. (2012). The Development and Application of Two-Time-Scale
Turbulence Models for Non-Equilibrium Flows. (Doctoral Dissertation). University of Manchester. Retrieved from http://www.manchester.ac.uk/escholar/uk-ac-man-scw:154700
Chicago Manual of Style (16th Edition):
Klein, Tania S. “The Development and Application of Two-Time-Scale
Turbulence Models for Non-Equilibrium Flows.” 2012. Doctoral Dissertation, University of Manchester. Accessed March 08, 2021.
http://www.manchester.ac.uk/escholar/uk-ac-man-scw:154700.
MLA Handbook (7th Edition):
Klein, Tania S. “The Development and Application of Two-Time-Scale
Turbulence Models for Non-Equilibrium Flows.” 2012. Web. 08 Mar 2021.
Vancouver:
Klein TS. The Development and Application of Two-Time-Scale
Turbulence Models for Non-Equilibrium Flows. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2021 Mar 08].
Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:154700.
Council of Science Editors:
Klein TS. The Development and Application of Two-Time-Scale
Turbulence Models for Non-Equilibrium Flows. [Doctoral Dissertation]. University of Manchester; 2012. Available from: http://www.manchester.ac.uk/escholar/uk-ac-man-scw:154700

University of Georgia
9.
Choi, Hye-Jeong.
A model that combines diagnostic classification assessment with mixture item response theory models.
Degree: 2014, University of Georgia
URL: http://hdl.handle.net/10724/26276
► The purpose of this dissertation is to present a new psychometric model that combines a Mixture Rasch model with a diagnostic model. We refer to…
(more)
▼ The purpose of this dissertation is to present a new psychometric model that combines a Mixture Rasch model with a diagnostic model. We refer to this model as a diagnostic classification mixture Rasch model (DCMixRM). The motivation for the
development of the DCMixRM is twofold. First, the DCMixRM is designed to provide rigorous explanation as to factors that are potentially causing the latent classes to form. In doing so, this model uses attribute mastery states as covariates. Second, the
DCMixRM is also designed to connect assessment to instruction by furnishing diagnostic information along with a general ability level. This model consists of two components: measurement and structural components. The measurement component includes
specification of item responses through simultaneously taking into account three sets of latent variables, such as a general ability, latent class membership, and mastery profiles of attributes. In the structural component, characteristics of three
latent variables are specified, including distributions of ability, latent class, and mastery profile. Further, in this model, we specify the relationship among these variables, particulary the association between latent class and mastery profile. The
DCMixRM has several advantages: it provides a way to detect heterogeneity in the population; it yields more accurate classification of latent classes; it provides a rigorous explanation about features of latent classes; it allows us to examine
incompleteness of the Q-matrix; and it allows us to make inferences on a global ability as well as on mastery profiles formed over the set of attributes. A series of simulation studies were conducted to evaluate the quality of estimation process for the
DCMixRM in terms of convergence and recovery of model parameters. For the simulation study, two sets of tests were designed: 30 items involving 3 attributes (A3I30), 20 items involving 4 attributes (A4I20). Under each condition, sample size, similarity
of ability means across latent classes, and strength of relationship between latent class and mastery profile were manipulated. Although for some conditions, convergence appeared problematic, results showed that the model parameters were well recovered
enough to lead appropriate inferences on the model parameters. We also applied the model to two empirical data sets, including an international reading and a statewide mathematics tests to give an illustration of how the model can be used. Further
research directions were discussed as well.
Subjects/Keywords: Local dependence; Multidimensionality; Latent class model; Mixture Rasch model; Diagnostic models; Log-linear cognitive diagnosis models; Diagnostic classification mixture Rasch model
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Choi, H. (2014). A model that combines diagnostic classification assessment with mixture item response theory models. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/26276
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Choi, Hye-Jeong. “A model that combines diagnostic classification assessment with mixture item response theory models.” 2014. Thesis, University of Georgia. Accessed March 08, 2021.
http://hdl.handle.net/10724/26276.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Choi, Hye-Jeong. “A model that combines diagnostic classification assessment with mixture item response theory models.” 2014. Web. 08 Mar 2021.
Vancouver:
Choi H. A model that combines diagnostic classification assessment with mixture item response theory models. [Internet] [Thesis]. University of Georgia; 2014. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10724/26276.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Choi H. A model that combines diagnostic classification assessment with mixture item response theory models. [Thesis]. University of Georgia; 2014. Available from: http://hdl.handle.net/10724/26276
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Arizona
10.
O'Neil, Patricia Marie.
LOG-LINEAR MODELS FOR EVALUATING HUNTING DEMAND.
Degree: 1983, University of Arizona
URL: http://hdl.handle.net/10150/274873
Subjects/Keywords: Log-linear models.;
Wildlife management – Arizona – Mathematical models.
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
O'Neil, P. M. (1983). LOG-LINEAR MODELS FOR EVALUATING HUNTING DEMAND.
(Masters Thesis). University of Arizona. Retrieved from http://hdl.handle.net/10150/274873
Chicago Manual of Style (16th Edition):
O'Neil, Patricia Marie. “LOG-LINEAR MODELS FOR EVALUATING HUNTING DEMAND.
” 1983. Masters Thesis, University of Arizona. Accessed March 08, 2021.
http://hdl.handle.net/10150/274873.
MLA Handbook (7th Edition):
O'Neil, Patricia Marie. “LOG-LINEAR MODELS FOR EVALUATING HUNTING DEMAND.
” 1983. Web. 08 Mar 2021.
Vancouver:
O'Neil PM. LOG-LINEAR MODELS FOR EVALUATING HUNTING DEMAND.
[Internet] [Masters thesis]. University of Arizona; 1983. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10150/274873.
Council of Science Editors:
O'Neil PM. LOG-LINEAR MODELS FOR EVALUATING HUNTING DEMAND.
[Masters Thesis]. University of Arizona; 1983. Available from: http://hdl.handle.net/10150/274873

University of Manchester
11.
Klein, Tania S.
The development and application of two-time-scale turbulence models for non-equilibrium flows.
Degree: PhD, 2012, University of Manchester
URL: https://www.research.manchester.ac.uk/portal/en/theses/the-development-and-application-of-twotimescale-turbulence-models-for-nonequilibrium-flows(fa07c3eb-6fd9-4999-a0d4-517ad82bc5b2).html
;
http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549648
► The reliable prediction of turbulent non-equilibrium flows is of high academic and industrial interest in several engineering fields. Most turbulent flows are often predicted using…
(more)
▼ The reliable prediction of turbulent non-equilibrium flows is of high academic and industrial interest in several engineering fields. Most turbulent flows are often predicted using single-time-scale Reynolds-Averaged-Navier-Stokes (RANS) turbulence models which assume the flows can be modelled through a single time or length scale which is an admittedly incorrect assumption. Therefore they are not expected to capture the lag in the response of the turbulence in non-equilibrium flows. In attempts to improve prediction of these flows, by taking into consideration some features of the turbulent kinetic energy spectrum, the multiple-time-scale models arose. A number of two-scale models have been proposed, but so far their use has been rather limited.This work thus focusses on the development of two-time-scale approaches. Two two-time-scale linear-eddy-viscosity models, referred to as NT1 and NT2 models, have been developed and the initial stages of the development of two-time-scale non-linear-eddy-viscosity models are also reported. The models' coefficients have been determined through asymptotic analysis of decaying grid turbulence, homogeneous shear flows and the flow in a boundary layer in local equilibrium. Three other important features of these models are that there is consistent partition of the large and the small scales for all above limiting cases, model sensitivity to the partition and production rate ratios and sensitivity of the eddy viscosity sensitive to the mean strain rates.The models developed have been tested through computations of a wide range of flows such as homogeneous shear and normally strained flows, fully developed channel flows, zero-pressure-gradient, adverse-pressure-gradient, favourable-pressure-gradient and oscillatory boundary layer flows, fully developed oscillatory and ramp up pipe flows and steady and pulsated backward-facing-step flows.The proposed NT1 and NT2 two-scale models have been shown to perform well in all test cases, being, among the benchmarked models tested, the models which best performed in the wide range of dimensionless shear values of homogeneous shear flows, the only linear-eddy-viscosity models which predicted well the turbulent kinetic energy in the normally strained cases and the only models which showed satisfactory sensitivity in predicting correctly the reattachment point in the unsteady backward facing step cases with different forcing frequencies. Although the development of the two-time-scale non-linear-eddy-viscosity models is still in progress, the interim versions proposed here have resulted in predictions of the Reynolds normal stresses similar to those of much more complex models in all test cases studied and in predictions of the turbulent kinetic energy in normally strained flows which are better than those of the other models tested in this study.
Subjects/Keywords: 620.106; two-time-scale turbulence models; non-equilibrium flows; linear-eddy-viscosity models; dy-viscosity models; turbulent kinetic energy spectrum
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Klein, T. S. (2012). The development and application of two-time-scale turbulence models for non-equilibrium flows. (Doctoral Dissertation). University of Manchester. Retrieved from https://www.research.manchester.ac.uk/portal/en/theses/the-development-and-application-of-twotimescale-turbulence-models-for-nonequilibrium-flows(fa07c3eb-6fd9-4999-a0d4-517ad82bc5b2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549648
Chicago Manual of Style (16th Edition):
Klein, Tania S. “The development and application of two-time-scale turbulence models for non-equilibrium flows.” 2012. Doctoral Dissertation, University of Manchester. Accessed March 08, 2021.
https://www.research.manchester.ac.uk/portal/en/theses/the-development-and-application-of-twotimescale-turbulence-models-for-nonequilibrium-flows(fa07c3eb-6fd9-4999-a0d4-517ad82bc5b2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549648.
MLA Handbook (7th Edition):
Klein, Tania S. “The development and application of two-time-scale turbulence models for non-equilibrium flows.” 2012. Web. 08 Mar 2021.
Vancouver:
Klein TS. The development and application of two-time-scale turbulence models for non-equilibrium flows. [Internet] [Doctoral dissertation]. University of Manchester; 2012. [cited 2021 Mar 08].
Available from: https://www.research.manchester.ac.uk/portal/en/theses/the-development-and-application-of-twotimescale-turbulence-models-for-nonequilibrium-flows(fa07c3eb-6fd9-4999-a0d4-517ad82bc5b2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549648.
Council of Science Editors:
Klein TS. The development and application of two-time-scale turbulence models for non-equilibrium flows. [Doctoral Dissertation]. University of Manchester; 2012. Available from: https://www.research.manchester.ac.uk/portal/en/theses/the-development-and-application-of-twotimescale-turbulence-models-for-nonequilibrium-flows(fa07c3eb-6fd9-4999-a0d4-517ad82bc5b2).html ; http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.549648

University of Cincinnati
12.
Palaparambil Dinesh, Lakshmi.
Essays on Mathematical Optimization for Residential Demand
Response in the Energy Sector.
Degree: PhD, Business: Business Administration, 2017, University of Cincinnati
URL: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511860511116905
► In the electric utility industry, it could be challenging to adjust supply to match demand due to large generator ramp up times, high generation costs…
(more)
▼ In the electric utility industry, it could be
challenging to adjust supply to match demand due to large generator
ramp up times, high generation costs and insufficient in-house
generation capacity. Demand response (DR) is a technique for
adjusting the demand for electric power instead of the supply.
Direct Load Control (DLC) is one of the ways to implement DR. DLC
program participants sign up for power interruption contracts and
are given financial incentives for curtailing electricity usage
during peak demand time periods. This dissertation studies a DLC
program for residential air conditioners using mathematical
optimization
models. First, we develop a model that determines what
contract parameters to use in designing contracts between the
provider and residential customers, when to turn which power unit
on or off and how much power to cut during peak demand hours. The
model uses information on customer preferences for choice of
contract parameters such as DLC financial incentives and energy
usage curtailment. In numerical experiments, the proposed model
leads to projected cost savings of the order of 20%, compared to a
current benchmark model used in practice. We also quantify the
impact of factors leading to cost savings and study characteristics
of customers picked by different contracts. Second, we study a DLC
program in a macro economic environment using a Computable General
Equilibrium (CGE) model. A CGE model is used to study the impact of
external factors such as policy and technology changes on different
economic sectors. Here we differentiate customers based on their
preference for DLC programs by using different values for price
elasticity of demand for electricity commodity. Consequently, DLC
program customers could substitute demand for electricity commodity
with other commodities such as transportation sector. Price
elasticity of demand is calculated using a novel methodology that
incorporates customer preferences for DLC contracts from the first
model. The calculation of elasticity based on our methodology is
useful since the prices of commodities are not only determined by
aggregate demand and supply but also by customers’ relative
preferences for commodities. In addition to this we quantify the
indirect substitution and rebound effects on sectoral activity
levels, incomes and prices based on customer differences, when DLC
is implemented.
Advisors/Committee Members: Rao, Uday (Committee Chair).
Subjects/Keywords: Operations Research; Demand Response; Computable General Equilibrium Models; Mixed Integer Linear Programming
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Palaparambil Dinesh, L. (2017). Essays on Mathematical Optimization for Residential Demand
Response in the Energy Sector. (Doctoral Dissertation). University of Cincinnati. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511860511116905
Chicago Manual of Style (16th Edition):
Palaparambil Dinesh, Lakshmi. “Essays on Mathematical Optimization for Residential Demand
Response in the Energy Sector.” 2017. Doctoral Dissertation, University of Cincinnati. Accessed March 08, 2021.
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511860511116905.
MLA Handbook (7th Edition):
Palaparambil Dinesh, Lakshmi. “Essays on Mathematical Optimization for Residential Demand
Response in the Energy Sector.” 2017. Web. 08 Mar 2021.
Vancouver:
Palaparambil Dinesh L. Essays on Mathematical Optimization for Residential Demand
Response in the Energy Sector. [Internet] [Doctoral dissertation]. University of Cincinnati; 2017. [cited 2021 Mar 08].
Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511860511116905.
Council of Science Editors:
Palaparambil Dinesh L. Essays on Mathematical Optimization for Residential Demand
Response in the Energy Sector. [Doctoral Dissertation]. University of Cincinnati; 2017. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=ucin1511860511116905
13.
Gustavsson, Sara.
Evaluation of regression methods for log-normal data - linear models for environmental exposure and biomarker outcomes.
Degree: 2015, University of Gothenburg / Göteborgs Universitet
URL: http://hdl.handle.net/2077/37537
► The identification and quantification of associations between variables is often of interest in occupational and environmental research, and regression analysis is commonly used to assess…
(more)
▼ The identification and quantification of associations between variables is often of interest in occupational and environmental research, and regression analysis is commonly used to assess these associations. While exposures and biological data often have a positive skewness and can be approximated with the log-normal distribution, much of the inference in regression analysis is based on the normal distribution. A common approach is therefore to log-transform the data before the regression analysis. However, if the regression model contains quantitative predictors, a transformation often gives a more complex interpretation of the coefficients. A linear model in original scale (non-transformed data) estimates the additive effect of the predictor, while linear regression on a log-transformed response estimates the relative effect.
The overall aim of this thesis was to develop and evaluate a maximum likelihood method (denoted MLLN) for estimating the absolute effects for the predictors in a regression model where the outcome follows a log-normal distribution. The MLLN estimates were compared to estimates using common regression methods, both using large-scale simulation studies, and by applying the method to a number of real-life datasets. The method was also further developed to handle repeated measurements data. Our results show that when the association is linear and the sample size is large (> 100 observations), MLLN provides basically unbiased point estimates and has accurate coverage for both confidence and predictor intervals. Our results also showed that, if the relationship is linear, log-transformation, which is the most commonly used method for regression on log-normal data, leads to erroneous point estimates, liberal prediction intervals, and erroneous confidence intervals. For independent samples, we also studied small-sample properties of the MLLN-estimates; we suggest the use of bootstrap methods when samples are too small for the estimates to achieve the asymptotic properties.
Subjects/Keywords: log-normal distribution; linear models; absolute effects
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gustavsson, S. (2015). Evaluation of regression methods for log-normal data - linear models for environmental exposure and biomarker outcomes. (Thesis). University of Gothenburg / Göteborgs Universitet. Retrieved from http://hdl.handle.net/2077/37537
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gustavsson, Sara. “Evaluation of regression methods for log-normal data - linear models for environmental exposure and biomarker outcomes.” 2015. Thesis, University of Gothenburg / Göteborgs Universitet. Accessed March 08, 2021.
http://hdl.handle.net/2077/37537.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gustavsson, Sara. “Evaluation of regression methods for log-normal data - linear models for environmental exposure and biomarker outcomes.” 2015. Web. 08 Mar 2021.
Vancouver:
Gustavsson S. Evaluation of regression methods for log-normal data - linear models for environmental exposure and biomarker outcomes. [Internet] [Thesis]. University of Gothenburg / Göteborgs Universitet; 2015. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2077/37537.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gustavsson S. Evaluation of regression methods for log-normal data - linear models for environmental exposure and biomarker outcomes. [Thesis]. University of Gothenburg / Göteborgs Universitet; 2015. Available from: http://hdl.handle.net/2077/37537
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech
14.
Friedman, David J.
Evaluation of predictive equations using biased estimators for the linear regression model.
Degree: PhD, Industrial engineering, 1983, Georgia Tech
URL: http://hdl.handle.net/1853/33440
Subjects/Keywords: Regression analysis; Log-linear models; Mathematical statistics
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Friedman, D. J. (1983). Evaluation of predictive equations using biased estimators for the linear regression model. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/33440
Chicago Manual of Style (16th Edition):
Friedman, David J. “Evaluation of predictive equations using biased estimators for the linear regression model.” 1983. Doctoral Dissertation, Georgia Tech. Accessed March 08, 2021.
http://hdl.handle.net/1853/33440.
MLA Handbook (7th Edition):
Friedman, David J. “Evaluation of predictive equations using biased estimators for the linear regression model.” 1983. Web. 08 Mar 2021.
Vancouver:
Friedman DJ. Evaluation of predictive equations using biased estimators for the linear regression model. [Internet] [Doctoral dissertation]. Georgia Tech; 1983. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1853/33440.
Council of Science Editors:
Friedman DJ. Evaluation of predictive equations using biased estimators for the linear regression model. [Doctoral Dissertation]. Georgia Tech; 1983. Available from: http://hdl.handle.net/1853/33440

University of Georgia
15.
Zor, Selay.
Designing field tests for multidimensional classification models.
Degree: 2018, University of Georgia
URL: http://hdl.handle.net/10724/38528
► Diagnostic classification models (DCMs) are multidimensional latent variable models that can provide diagnostic information about the mastery state of examinees’ knowledge components (Rupp, Templin &…
(more)
▼ Diagnostic classification models (DCMs) are multidimensional latent variable models that can provide diagnostic information about the mastery state of examinees’ knowledge components (Rupp, Templin & Henson, 2010). DCMs classify
examinees based on specified knowledge components, and provide multidimensional feedback about examinees’ strength and weaknesses. However, recent large-scale assessments have not designed to diagnose, and few practical applications of DCMs exists.
Creating multidimensional assessments is needed to meet demands of more detailed feedback. It introduces new challenges to educational assessment research. Field testing is an essential step in creating assessments. Field testing items for unidimensional
vs. multidimensional assessments are not the same. Different field test designs result in sparse data, and research has not studied sparse data conditions for DCMs. I investigate the impact of sparse data, due to different field test designs, on the
estimation accuracy for DCMs. Results provide needed guidelines for designing DCM-based field tests.
Subjects/Keywords: Diagnostic classification models; Log-linear cognitive diagnosis model; field-testing; item tryouts; planned missing data design
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Zor, S. (2018). Designing field tests for multidimensional classification models. (Thesis). University of Georgia. Retrieved from http://hdl.handle.net/10724/38528
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Zor, Selay. “Designing field tests for multidimensional classification models.” 2018. Thesis, University of Georgia. Accessed March 08, 2021.
http://hdl.handle.net/10724/38528.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Zor, Selay. “Designing field tests for multidimensional classification models.” 2018. Web. 08 Mar 2021.
Vancouver:
Zor S. Designing field tests for multidimensional classification models. [Internet] [Thesis]. University of Georgia; 2018. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10724/38528.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Zor S. Designing field tests for multidimensional classification models. [Thesis]. University of Georgia; 2018. Available from: http://hdl.handle.net/10724/38528
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Melbourne
16.
KARAVARSAMIS, NATALIE.
Methods for estimating occupancy.
Degree: 2014, University of Melbourne
URL: http://hdl.handle.net/11343/44235
► The estimation of the probability of occupancy of a site by a species is used to monitor the distribution of that species. Occupancy models have…
(more)
▼ The estimation of the probability of occupancy of a site by a species is used to monitor the distribution of that species. Occupancy models have been widely applied and several limitations have been identified. In this thesis we resolve some of these. In particular we focus on limitations of maximum likelihood estimators and the associated interval estimators, and the difficulties associated with the extension from linear to generalised additive models for the relationship between occupancy and covariates. Initially we consider in detail the basic occupancy model which includes two parameters: ψ and p. Our primary concern is the probability that the species occupies a particular site, ψ. The other parameter, the detection probability p, is a nuisance parameter. We first derive the joint probability mass function for the sufficient statistics of occupancy which allows the exact evaluation of its mean and variance, and hence its bias. We show that estimation near the boundaries of the parameter space is difficult. For small values of detection, we show that estimation of occupancy is not possible and specify the region of the parameter space where maximum likelihood estimators exist, and give the equations for the MLEs in this region. We next demonstrate that the asymptotic variance of the estimated occupancy is underestimated, yielding interval estimators that are too narrow. Methods for constructing interval estimators are then explored. We evaluate several bootstrap-based interval estimators for occupancy. Finally, instead of the full likelihood we consider a partial likelihood approach. This gives simple closed form estimators in a basic model with only a small loss of efficiency. It greatly simplifies the inclusion of linear and nonlinear covariates by allowing the use of standard statistical software for GLM and GAM frameworks and in our simulation study there is little loss of efficiency compared to the full likelihood.
Subjects/Keywords: occupancy models; probability of detection; partial likelihood; maximum likelihood; GAM; GLM; non linear models; bootstrap; interval estimators; modern statistics
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
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APA (6th Edition):
KARAVARSAMIS, N. (2014). Methods for estimating occupancy. (Doctoral Dissertation). University of Melbourne. Retrieved from http://hdl.handle.net/11343/44235
Chicago Manual of Style (16th Edition):
KARAVARSAMIS, NATALIE. “Methods for estimating occupancy.” 2014. Doctoral Dissertation, University of Melbourne. Accessed March 08, 2021.
http://hdl.handle.net/11343/44235.
MLA Handbook (7th Edition):
KARAVARSAMIS, NATALIE. “Methods for estimating occupancy.” 2014. Web. 08 Mar 2021.
Vancouver:
KARAVARSAMIS N. Methods for estimating occupancy. [Internet] [Doctoral dissertation]. University of Melbourne; 2014. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/11343/44235.
Council of Science Editors:
KARAVARSAMIS N. Methods for estimating occupancy. [Doctoral Dissertation]. University of Melbourne; 2014. Available from: http://hdl.handle.net/11343/44235

Addis Ababa University
17.
Amrot, Yilma.
Determinants of Life Insurance Demand in Ethiopia
.
Degree: 2014, Addis Ababa University
URL: http://etd.aau.edu.et/dspace/handle/123456789/4996
► The study is intended to investigate the major determinants of life insurance demand in Ethiopia. The study focuses on the relationship of life insurance with…
(more)
▼ The study is intended to investigate the major determinants of life insurance demand in Ethiopia. The study focuses on the relationship of life insurance with six selected independent variables (income, inflation, real interest rate, level of education, life expectance and dependence ratio). The researcher used a time series data from 1983-2012. The approach for this study is quantitative research approach. To find the major determinant factors for life insurance demand, the researcher adapted a
log linear model. The adjusted R squared for the model is 0.9656 which indicates that about 96.56 percent of demand for life insurance is explained by the selected six factors. The t-statistics and p-value show that explanatory variables such as GDP per capita, inflation, real interest rate, level of education and life expectance are statistically significant at 10 percent significance level. GDP per capita, real interest rate, level of education and life expectance are positively related with life insurance demand whereas inflation is negatively related with life insurance demand. Dependence ratio does not have a statistically significant relationship with life insurance. GDP per capita is the most important factor that influences demand for life insurance followed by life expectance and level of Education. Inflation is the least important factor in influence demand for life insurance.
Advisors/Committee Members: Abebe Yetayew (Assistant Professor) (advisor).
Subjects/Keywords: Ethiopia;
Life insurance;
log linear model
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Amrot, Y. (2014). Determinants of Life Insurance Demand in Ethiopia
. (Thesis). Addis Ababa University. Retrieved from http://etd.aau.edu.et/dspace/handle/123456789/4996
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Amrot, Yilma. “Determinants of Life Insurance Demand in Ethiopia
.” 2014. Thesis, Addis Ababa University. Accessed March 08, 2021.
http://etd.aau.edu.et/dspace/handle/123456789/4996.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Amrot, Yilma. “Determinants of Life Insurance Demand in Ethiopia
.” 2014. Web. 08 Mar 2021.
Vancouver:
Amrot Y. Determinants of Life Insurance Demand in Ethiopia
. [Internet] [Thesis]. Addis Ababa University; 2014. [cited 2021 Mar 08].
Available from: http://etd.aau.edu.et/dspace/handle/123456789/4996.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Amrot Y. Determinants of Life Insurance Demand in Ethiopia
. [Thesis]. Addis Ababa University; 2014. Available from: http://etd.aau.edu.et/dspace/handle/123456789/4996
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Windsor
18.
Ali, Ayat Ruh.
Assessing Change and Vulnerability of the Guyana Coastline with Multi-Temporal Landsat Imagery and Survey Data.
Degree: MS, Earth and Environmental Sciences, 2016, University of Windsor
URL: https://scholar.uwindsor.ca/etd/5798
► The rationale for this thesis stems from the vulnerability of the coastal areas in Guyana to the escalating problems resulting from sea level rise. The…
(more)
▼ The rationale for this thesis stems from the vulnerability of the coastal areas in Guyana to the escalating problems resulting from sea level rise. The objectives are to: (i) assess coastline change in Guyana; (ii) develop a physical-based coastal vulnerability index; and (iii) identify variables that influence the personal concern of coastal residents to water-related problems. The extraction of the Guyana coastlines from ten Landsat satellite images indicates spatial and temporal changes in 25 segments of the 128 km coastline of the Study Area. The estimates of the coastal vulnerability index identify segments of the coastline which are highly vulnerable to sea level rise. Education, age, and distance from the coast are the key variables that influence the level of personal concern. The thesis addresses the problem of paucity of coastal vulnerability research in Guyana. This is a contemporary research problem in low lying coastal areas throughout the world.
Advisors/Committee Members: Lakhan, Chris, Trenhaile, Alan.
Subjects/Keywords: Coastline Change; Coastline Vulnerability; Log-linear analysis
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Ali, A. R. (2016). Assessing Change and Vulnerability of the Guyana Coastline with Multi-Temporal Landsat Imagery and Survey Data. (Masters Thesis). University of Windsor. Retrieved from https://scholar.uwindsor.ca/etd/5798
Chicago Manual of Style (16th Edition):
Ali, Ayat Ruh. “Assessing Change and Vulnerability of the Guyana Coastline with Multi-Temporal Landsat Imagery and Survey Data.” 2016. Masters Thesis, University of Windsor. Accessed March 08, 2021.
https://scholar.uwindsor.ca/etd/5798.
MLA Handbook (7th Edition):
Ali, Ayat Ruh. “Assessing Change and Vulnerability of the Guyana Coastline with Multi-Temporal Landsat Imagery and Survey Data.” 2016. Web. 08 Mar 2021.
Vancouver:
Ali AR. Assessing Change and Vulnerability of the Guyana Coastline with Multi-Temporal Landsat Imagery and Survey Data. [Internet] [Masters thesis]. University of Windsor; 2016. [cited 2021 Mar 08].
Available from: https://scholar.uwindsor.ca/etd/5798.
Council of Science Editors:
Ali AR. Assessing Change and Vulnerability of the Guyana Coastline with Multi-Temporal Landsat Imagery and Survey Data. [Masters Thesis]. University of Windsor; 2016. Available from: https://scholar.uwindsor.ca/etd/5798

Victoria University of Wellington
19.
Mohaimen, FJ Abu.
Value Relevance of Integrated Reporting using a Novel Approach: Comparative Cross Country Evidence of Mandatory and Voluntary Implementers.
Degree: 2021, Victoria University of Wellington
URL: http://hdl.handle.net/10063/9435
► This thesis examines the value relevance of accounting information under integrated reporting (IR) in a comparative mandatory and voluntary setting. A meta review is conducted…
(more)
▼ This thesis examines the value relevance of accounting information under integrated reporting (IR) in a comparative mandatory and voluntary setting. A meta review is conducted of all published work focusing on integrated reporting since 2011, which provides detailed insight into the gaps in the IR literature. Multiplicative
log-
linear model is used in measurement, which is a novel technique that mitigates the shortcomings of traditional value relevance
models. The findings show that value relevance of summary accounting information increases after the implementation of IR in the mandatory setting. In the voluntary setting, market effect and the existing reporting paradigm effect the value relevance of accounting information under IR. If the market is large and existing reporting requirements are robust voluntary adoption of IR has minimal to no effect. However, in smaller markets with less rigorous reporting environment, adoption of IR does result in increased value relevance of accounting information. Compared to traditional
models, the multiplicative model provides estimates that are more stable over time and shows better explanatory power. Overall, the findings of this thesis show that capital
providers value the information content of IR under specific circumstances. This thesis contributes to the IR and value relevance literature by providing the first comparative cross-country evidence of the effect of IR in the change in value relevance of reported accounting information. It provides policy relevant input to the standard setters of IR by demonstrating the effect of IR in the decision usefulness of summary accounting information. The thesis further provides robust evidence of the efficacy of using the multiplicative
log-
linear model in measuring value relevance instead of the traditional
linear additive
models.
Advisors/Committee Members: Lubberink, Martien, Islam, Ainul.
Subjects/Keywords: Integrated reporting; Value relevance; Log linear model
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APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Mohaimen, F. A. (2021). Value Relevance of Integrated Reporting using a Novel Approach: Comparative Cross Country Evidence of Mandatory and Voluntary Implementers. (Doctoral Dissertation). Victoria University of Wellington. Retrieved from http://hdl.handle.net/10063/9435
Chicago Manual of Style (16th Edition):
Mohaimen, FJ Abu. “Value Relevance of Integrated Reporting using a Novel Approach: Comparative Cross Country Evidence of Mandatory and Voluntary Implementers.” 2021. Doctoral Dissertation, Victoria University of Wellington. Accessed March 08, 2021.
http://hdl.handle.net/10063/9435.
MLA Handbook (7th Edition):
Mohaimen, FJ Abu. “Value Relevance of Integrated Reporting using a Novel Approach: Comparative Cross Country Evidence of Mandatory and Voluntary Implementers.” 2021. Web. 08 Mar 2021.
Vancouver:
Mohaimen FA. Value Relevance of Integrated Reporting using a Novel Approach: Comparative Cross Country Evidence of Mandatory and Voluntary Implementers. [Internet] [Doctoral dissertation]. Victoria University of Wellington; 2021. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10063/9435.
Council of Science Editors:
Mohaimen FA. Value Relevance of Integrated Reporting using a Novel Approach: Comparative Cross Country Evidence of Mandatory and Voluntary Implementers. [Doctoral Dissertation]. Victoria University of Wellington; 2021. Available from: http://hdl.handle.net/10063/9435
20.
Nwaubani, Joel.
Μακροοικονομική ανάλυση της περιόδου 1978-2007 στη Νιγηρία: προκλήσεις που αντιμετωπίζουν οι φορείς χάραξης πολιτικής.
Degree: 2010, University of Macedonia Economic and Social Sciences; Πανεπιστήμιο Μακεδονίας Οικονομικών και Κοινωνικών Επιστημών
URL: http://hdl.handle.net/10442/hedi/22737
► Evaluating macroeconomic analysis remain issues of considerable importance for economists, statisticians, the media and policymakers. Moreover, understanding how the economy works requires a shift from…
(more)
▼ Evaluating macroeconomic analysis remain issues of considerable importance for economists, statisticians, the media and policymakers. Moreover, understanding how the economy works requires a shift from economic measurement to economic analysis. It is in this respect that this study finds it worthwhile to address the following issue using data from the International Statistics Yearbook and International Monetary Fund and Federal Office of Statistics Nigeria for a 30-year period, 1978-2007. We study the association of the basic macroeconomic statistics, i.e. Gross Domestic Product (GDP): Consumption, Investment, Government Spending and Net exports. This research is divided into five sections. Section one analyzes the aims and methodology of this research. Section two explains the literature review and section three studies the macroeconomic analysis in Nigeria. Section four reviews the performances of the Nigerian economy. Finally, in section five, because the main focus is to have a better understanding of the economic changes in Nigeria, the method of Categorical Data Analysis (CDAS) will be used to analyze all the usual association models. The ANOAS table is given in order to ascertain the proportion of the data which is covered by each model. We find and estimate the model association with the best fit and finally reach into conclusion.
Αξιολογώντας τη μακροοικονομική ανάλυση αναδεικνύονται ζητήματα μεγάλης σπουδαιότητας για τους οικονομολόγους, τους στατιστικούς, τα μέσα μαζικής ενημέρωσης και τους φορείς χάραξης πολιτικής. Εξάλλου, η κατανόηση πώς λειτουργεί η οικονομία απαιτεί μια μετατόπιση από την οικονομική μέτρηση στην οικονομική ανάλυση. Στην έρευνα αυτή χρησιμοποιούμε όλα τα γνωστά μοντέλα συσχέτισης της Ανάλυσης Διατεταγμένων Δεδομένων και εξετάζουμε την σχέση μεταξύ των βασικών μακροοικονομικών στατιστικών, δηλαδή, ακαθάριστο εγχώριο προϊόν GDP (το οποίο συμβολίζουμε με Υ), χωρίζεται σε τέσσερα συστατικά: κατανάλωση, επένδυση, δημόσιες δαπάνες, και καθαρές εξαγωγές) στη Νιγηρία για περίοδο 30 ετών από το 1978 έως το 2007. Τα δεδομένα σε ετήσια βάση προέρχονται από την Διεθνή Στατιστική Υπηρεσία και το Διεθνές Νομισματικό Ταμείο (ΔΝΤ) και της Ομοσπονδιακής Στατιστικής Υπηρεσίας της Νιγηρίας. Η έρευνα αυτή χωρίζεται σε πέντε κεφάλαια. Το πρώτο κεφάλαιο αναλύει τους στόχους και τη μεθοδολογία της έρευνας αυτής. Το δεύτερο κεφάλαιο εξηγεί τη βιβλιογραφική ανασκόπηση και το τρίτο κεφάλαιο είναι οι μελέτες της μακροοικονομικής ανάλυσης στη Νιγηρία. Το τέταρτο κεφάλαιο εξετάζει τις επιδόσεις της μακροοικονομικής στη Νιγηρία. Τέλος, στο πέμπτο κεφάλαιο, δεδομένου ότι η κύρια εστίαση είναι να υπάρξει μια καλύτερη κατανόηση των οικονομικών αλλαγών στη Νιγηρία, δίνουμε: 1) τον πίνακα συσχέτισης ANOAS για να δούμε το ποσοστό των δεδομένων που καλύπτεται από το κάθε μοντέλο, 2) βρίσκουμε το μοντέλο συσχέτισης που παρουσιάζει την καλύτερη προσαρμογή, 3) κάνουμε την εκτίμησή του και τέλος διατυπώνουμε τα συμπεράσματα που προκύπτουν από αυτό.
Subjects/Keywords: Μοντέλα συσχέτισης; Λογαριθμογραμμικά μοντέλα; Μη Λογαριθμογραμμικά μοντέλα; ASSOCIATION MODELS; Log-linear models; Non-linear models
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Nwaubani, J. (2010). Μακροοικονομική ανάλυση της περιόδου 1978-2007 στη Νιγηρία: προκλήσεις που αντιμετωπίζουν οι φορείς χάραξης πολιτικής. (Thesis). University of Macedonia Economic and Social Sciences; Πανεπιστήμιο Μακεδονίας Οικονομικών και Κοινωνικών Επιστημών. Retrieved from http://hdl.handle.net/10442/hedi/22737
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Nwaubani, Joel. “Μακροοικονομική ανάλυση της περιόδου 1978-2007 στη Νιγηρία: προκλήσεις που αντιμετωπίζουν οι φορείς χάραξης πολιτικής.” 2010. Thesis, University of Macedonia Economic and Social Sciences; Πανεπιστήμιο Μακεδονίας Οικονομικών και Κοινωνικών Επιστημών. Accessed March 08, 2021.
http://hdl.handle.net/10442/hedi/22737.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Nwaubani, Joel. “Μακροοικονομική ανάλυση της περιόδου 1978-2007 στη Νιγηρία: προκλήσεις που αντιμετωπίζουν οι φορείς χάραξης πολιτικής.” 2010. Web. 08 Mar 2021.
Vancouver:
Nwaubani J. Μακροοικονομική ανάλυση της περιόδου 1978-2007 στη Νιγηρία: προκλήσεις που αντιμετωπίζουν οι φορείς χάραξης πολιτικής. [Internet] [Thesis]. University of Macedonia Economic and Social Sciences; Πανεπιστήμιο Μακεδονίας Οικονομικών και Κοινωνικών Επιστημών; 2010. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10442/hedi/22737.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Nwaubani J. Μακροοικονομική ανάλυση της περιόδου 1978-2007 στη Νιγηρία: προκλήσεις που αντιμετωπίζουν οι φορείς χάραξης πολιτικής. [Thesis]. University of Macedonia Economic and Social Sciences; Πανεπιστήμιο Μακεδονίας Οικονομικών και Κοινωνικών Επιστημών; 2010. Available from: http://hdl.handle.net/10442/hedi/22737
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Illinois – Urbana-Champaign
21.
Li, Zhushan.
Loglinear Models as Item Response Models.
Degree: PhD, 0210, 2011, University of Illinois – Urbana-Champaign
URL: http://hdl.handle.net/2142/18619
► For analyzing item response data, item response theory (IRT) models treat the discrete responses to the items as driven by underlying continuous latent traits, and…
(more)
▼ For analyzing item response data, item response theory (IRT)
models treat the discrete responses to the items as driven by underlying continuous latent traits, and consider the form of conditional probability of the response to each item given the latent traits. In a similar fashion,
log-
linear models directly consider the form of the manifest probability of response patterns. Researchers have been connecting the two paradigms by establishing equivalence relationships between IRT
models and
log-
linear models. This has lead to the notion of obtaining IRT solutions by fitting their equivalent
log-
linear models.
In this research, I have established a family of
log-
linear models,
log linear-by-
linear association (LLLA)
models, that incorporate a variety of IRT
models, particularly, a family of generalized Rasch
models. I have derived an extension of the Dutch Identity theorem to polytomous items and utilized it to develop the
models that incorporate item covariates and person covariates. Noteworthy features of the
models include both polytomous responses and multiple latent traits.
Along with developing this new family of
models, I have conducted extensive research on the development of an accompanying estimation method. Historically, a significant barrier to the application of
log-
linear models in analyzing item responses has been the high computational cost of maximum likelihood estimation (MLE), due to the fact that the number of response patterns grows exponentially as the number of items increases. To solve this computational problem, a pseudo-likelihood estimation (PLE) method is proposed and it dramatically decreases the computational cost.
To demonstrate the effectiveness of the developed
models and the pseudolikelihood estimation method, I will present results of a series of simulation studies. To demonstrate the practical advantages of the methods, I will give a detailed description of an application to a real data set from a study on verbally aggressive behavior.
Advisors/Committee Members: Anderson, Carolyn J. (advisor), Anderson, Carolyn J. (Committee Chair), Chang, Hua-Hua (committee member), Douglas, Jeffrey A. (committee member), Roussos, Louis A. (committee member), Zhang, Jinming (committee member).
Subjects/Keywords: Item response theory; loglinear models; pseudolikelihood; Dutch identity; log linear-by-linear association model; Rasch model; polytomous item response theory (IRT) models; multidimensional item response theory (IRT) models; item covariates; person covariates
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, Z. (2011). Loglinear Models as Item Response Models. (Doctoral Dissertation). University of Illinois – Urbana-Champaign. Retrieved from http://hdl.handle.net/2142/18619
Chicago Manual of Style (16th Edition):
Li, Zhushan. “Loglinear Models as Item Response Models.” 2011. Doctoral Dissertation, University of Illinois – Urbana-Champaign. Accessed March 08, 2021.
http://hdl.handle.net/2142/18619.
MLA Handbook (7th Edition):
Li, Zhushan. “Loglinear Models as Item Response Models.” 2011. Web. 08 Mar 2021.
Vancouver:
Li Z. Loglinear Models as Item Response Models. [Internet] [Doctoral dissertation]. University of Illinois – Urbana-Champaign; 2011. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2142/18619.
Council of Science Editors:
Li Z. Loglinear Models as Item Response Models. [Doctoral Dissertation]. University of Illinois – Urbana-Champaign; 2011. Available from: http://hdl.handle.net/2142/18619
22.
Gamage, Pemantha L.
Bayesian analysis of log-linear models with an application.
Degree: Mathematics and Statistics, 2012, Texas Tech University
URL: http://hdl.handle.net/2346/45244
► The purpose of this thesis is to study how Lindley's asymptotic and approximate Bayesian methodology can be used in analyzing categorical data using log-linear models.…
(more)
▼ The purpose of this thesis is to study how Lindley's asymptotic and approximate
Bayesian methodology can be used in analyzing categorical data using
log-
linear
models. Special attention is paid to the analysis of multinomial categorical data
from a Bayesian point of view. The study is mainly based on two papers by Lindley
(1964) and Spiegelhalter and Smith (1982).
The thesis begins with a thorough discussion of the Bayes factor. Different versions of the Bayes factor and how a Bayes factor can be used to select one of two
competing
models are presented in detail. In addition, the Savage-Dickey density
ratio formula for calculating Bayes factors is discussed.
Next Lindley's approximation theorem for the joint posterior distribution of the
parameter vector of a multinomial distribution with an improper Dirichlet prior is
stated. After that, a more precise and more general version of Lindley's theorem is
given with a detailed proof. A discussion of how Spiegelhalter and Smith (1982) use
the Savage-Dickey density ratio to calculate Bayes factors for multinomial data
under an improper Dirichlet prior is also presented.
The last part of the thesis contains an illustration of how Bayesian
log-
linear
models can be used to analyze multinomial data. Lindley's approximation theorem,
Spiegelhalter and Smith's method for calculating Bayes factors and an improper
Dirichlet prior for the multinomial parameters were utilized for this purpose. The
data used for this illustration were collected by the Nutritional Division of the
Ministry of Health in Sri Lanka.
Advisors/Committee Members: Hadjicostas, Petros (Committee Chair), Mansouri, Hossein (committee member), Surles, James (committee member).
Subjects/Keywords: Bayesian statistical decision theory; Log-linear models; Bayes factor
…for calculating Bayes factors can be used in analysing multinomial data
using log-linear… …log-linear model is calculated under a certain null
hypothesis. At the end of the chapter… …Ministry of
Health in Sri Lanka. The data are described in Section 4.1, while a log-linear model… …used to test whether the three-way interaction term in the log-linear
model used for… …To achieve this, we use some standard
results from the matrix theory of statistical linear…
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Gamage, P. L. (2012). Bayesian analysis of log-linear models with an application. (Thesis). Texas Tech University. Retrieved from http://hdl.handle.net/2346/45244
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Chicago Manual of Style (16th Edition):
Gamage, Pemantha L. “Bayesian analysis of log-linear models with an application.” 2012. Thesis, Texas Tech University. Accessed March 08, 2021.
http://hdl.handle.net/2346/45244.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
MLA Handbook (7th Edition):
Gamage, Pemantha L. “Bayesian analysis of log-linear models with an application.” 2012. Web. 08 Mar 2021.
Vancouver:
Gamage PL. Bayesian analysis of log-linear models with an application. [Internet] [Thesis]. Texas Tech University; 2012. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/2346/45244.
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation
Council of Science Editors:
Gamage PL. Bayesian analysis of log-linear models with an application. [Thesis]. Texas Tech University; 2012. Available from: http://hdl.handle.net/2346/45244
Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Arizona
23.
Towstopiat, Olga Michael.
MULTIVARIATE MEASURE OF AGREEMENT
.
Degree: 1981, University of Arizona
URL: http://hdl.handle.net/10150/281936
► Reliability issues are always salient as behavioral researchers observe human behavior and classify individuals from criterion-referenced test scores. This has created a need for studies…
(more)
▼ Reliability issues are always salient as behavioral researchers observe human behavior and classify individuals from criterion-referenced test scores. This has created a need for studies to assess agreement between observers, recording the occurrance of various behaviors, to establish the reliability of their classifications. In addition, there is a need for measuring the consistency of dichotomous and polytomous classifications established from criterion-referenced test scores. The development of several
log linear univariate
models for measuring agreement has partially met the demand for a probability-based measure of agreement with a directly interpretable meaning. However, multi-variate repeated measures agreement produres are necessary because of the development of complex intrasubject and intersubject research designs. The present investigation developed applications of the
log linear, latent class, and weighted least squares procedures for the analysis of multivariate repeated measures designs. These computations tested the model-data fit and calculated the multivariate measure of the magnitude of agreement under the quasi-equiprobability and quasi-independence
models. Applications of these computations were illustrated with real and hypothetical observational data. It was demonstrated that employing
log linear, latent class, and weighted least squares computations resulted in identical multi-variate model-data fits with equivalent chi-square values. Moreover, the application of these three methodologies also produced identical measures of the degree of agreement at each point in time and for the multivariate average. The multivariate methods that were developed also included procedures for measuring the probability of agreement for a single response classification or subset of classifications from a larger set. In addition, procedures were developed to analyze occurrences of systematic observed disagreement within the multivariate tables. The consistency of dichotomous and polytomous classifications over repeated assessments of the identical examinees was also suggested as a means of conceptualizing criterion-referenced reliability. By applying the univariate and multivariate
models described, the reliability of these classifications across repeated testings could be calculated. The procedures utilizing the
log linear, latent structure, and weighted least squares concepts for the purpose of measuring agreement have the advantages of (1)yielding a coefficient of agreement that varies between zero and one and measures agreement in terms of the probability that the observers' judgements will agree, as estimated under a quasi-equiprobability or quasi-independence model, (2)correcting for the proportion of "chance" agreement, and (3) providing a directly interpretable coefficient of "no agreement." Thus, these multivariate procedures may be regarded as a more refined psychometric technology for measuring inter-observer agreement and criterion-referenced test reliability.
Advisors/Committee Members: Bergan, John R (advisor).
Subjects/Keywords: Psychology – Research – Reliability.;
Psychology – Methodology.;
Multivariate analysis.;
Log-linear models.;
Latent variables.
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APA ·
Chicago ·
MLA ·
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CSE |
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to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Towstopiat, O. M. (1981). MULTIVARIATE MEASURE OF AGREEMENT
. (Doctoral Dissertation). University of Arizona. Retrieved from http://hdl.handle.net/10150/281936
Chicago Manual of Style (16th Edition):
Towstopiat, Olga Michael. “MULTIVARIATE MEASURE OF AGREEMENT
.” 1981. Doctoral Dissertation, University of Arizona. Accessed March 08, 2021.
http://hdl.handle.net/10150/281936.
MLA Handbook (7th Edition):
Towstopiat, Olga Michael. “MULTIVARIATE MEASURE OF AGREEMENT
.” 1981. Web. 08 Mar 2021.
Vancouver:
Towstopiat OM. MULTIVARIATE MEASURE OF AGREEMENT
. [Internet] [Doctoral dissertation]. University of Arizona; 1981. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/10150/281936.
Council of Science Editors:
Towstopiat OM. MULTIVARIATE MEASURE OF AGREEMENT
. [Doctoral Dissertation]. University of Arizona; 1981. Available from: http://hdl.handle.net/10150/281936

University of Central Florida
24.
Chundi, Sai Srinivas.
Applying Log-linear Models And GIS To Study The Safety Of Pedestrians And Bicyclists : A Case Study Of Orange County School Children.
Degree: 2005, University of Central Florida
URL: https://stars.library.ucf.edu/etd/541
► Abstract Pedestrian /bicycle safety of school children has been a growing menace that has been attracting attention from transportation professionals, school boards, media and the…
(more)
▼ Abstract Pedestrian /bicycle safety of school children has been a growing menace that has been attracting attention from transportation professionals, school boards, media and the community all over the country. As such there has been a necessity to identify critical variables and assess their importance in pedestrian/bicycle crashes occurring in and around school zones. The current study is an endeavor in this direction. The literature review identified some studies that were conducted on school zone safety related to pedestrian/bicyclist crashes. Most of the studies pertained to crashes with all age groups. There have been few studies with emphasis only on school aged children. In this study we focus on pedestrian age group (4 to 18 years), the time of the day when the school children are expected to be commuting (6:30 AM to 10:00 AM and 1:00 PM to 5:00.PM), the day of week (Monday through Friday) and the days when the school is opened (January 6th to May 31st and August 6th to December 21st). Geographical Information Systems was used to locate buffer zones around schools with higher crash incidence rates. The use of
log-
linear analysis has culminated in explaining the relationship between various variables and crash incidence or crash frequency Crash data for this study was obtained in the form of crash database and GIS maps from the Department of Highway Safety and Motor Vehicles and the Orange County School Board respectively. Crash reports were downloaded from the CAR database of the FDOT mainframe website. The crash data was related to the GIS maps to visually depict the proximity of crashes to the school zones and thus identified risky schools and school districts. It was concluded from the spatial analysis that the incidence of crashes was higher at middle schools. In the
log-
linear analysis different
models were i tested to explain the effects of driver characteristics, geometric characteristics and pedestrian characteristics on the crash frequency. It was found that driver age, number of lanes, median type, pedestrian age and speed limit are the critical variables in explaining crash frequency. By examining the levels of the variables that were significantly involved in the crashes we would get an insight on ways to explain and control pedestrian/bicyclists crashes at school zones. It is hoped that this thesis would make an active contribution in improving the safety of bicyclists and pedestrians in and around school zones and make the schools much safer for the children.
Advisors/Committee Members: Abdel-Aty, Mohamed.
Subjects/Keywords: GIS; Log Linear Models; School Safety; Orange County; Civil Engineering; Engineering
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chundi, S. S. (2005). Applying Log-linear Models And GIS To Study The Safety Of Pedestrians And Bicyclists : A Case Study Of Orange County School Children. (Masters Thesis). University of Central Florida. Retrieved from https://stars.library.ucf.edu/etd/541
Chicago Manual of Style (16th Edition):
Chundi, Sai Srinivas. “Applying Log-linear Models And GIS To Study The Safety Of Pedestrians And Bicyclists : A Case Study Of Orange County School Children.” 2005. Masters Thesis, University of Central Florida. Accessed March 08, 2021.
https://stars.library.ucf.edu/etd/541.
MLA Handbook (7th Edition):
Chundi, Sai Srinivas. “Applying Log-linear Models And GIS To Study The Safety Of Pedestrians And Bicyclists : A Case Study Of Orange County School Children.” 2005. Web. 08 Mar 2021.
Vancouver:
Chundi SS. Applying Log-linear Models And GIS To Study The Safety Of Pedestrians And Bicyclists : A Case Study Of Orange County School Children. [Internet] [Masters thesis]. University of Central Florida; 2005. [cited 2021 Mar 08].
Available from: https://stars.library.ucf.edu/etd/541.
Council of Science Editors:
Chundi SS. Applying Log-linear Models And GIS To Study The Safety Of Pedestrians And Bicyclists : A Case Study Of Orange County School Children. [Masters Thesis]. University of Central Florida; 2005. Available from: https://stars.library.ucf.edu/etd/541

University of Kentucky
25.
Li, Yuntong.
Semiparametric and Nonparametric Methods for Comparing Biomarker Levels between Groups.
Degree: 2020, University of Kentucky
URL: https://uknowledge.uky.edu/statistics_etds/44
► Comparing the distribution of biomarker measurements between two groups under either an unpaired or paired design is a common goal in many biomarker studies. However,…
(more)
▼ Comparing the distribution of biomarker measurements between two groups under either an unpaired or paired design is a common goal in many biomarker studies. However, analyzing biomarker data is sometimes challenging because the data may not be normally distributed and contain a large fraction of zero values or missing values. Although several statistical methods have been proposed, they either require data normality assumption, or are inefficient. We proposed a novel two-part semiparametric method for data under an unpaired setting and a nonparametric method for data under a paired setting. The semiparametric method considers a two-part model, a logistic regression for the zero proportion and a semi-parametric log-linear model for the non-zero values. It is free of distributional assumption and also allows for adjustment of covariates. We propose a kernel-smoothed likelihood method to estimate regression coefficients in the two-part model and construct a likelihood ratio test for the analysis. The nonparametric method considers weighted mean difference statistics for paired data with missing values. It uses all the available data, and it is also free of distributional assumptions. We construct a Wald test for the analysis in this part. Simulations and real data analyses demonstrate that our methods outperform existing methods.
Subjects/Keywords: Biomarker; Differential abundance analysis; Semi-parametric log-linear model; Nonparametric tests; Optimum weights; Missing data; Applied Statistics; Biostatistics; Statistical Methodology; Statistical Models
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Li, Y. (2020). Semiparametric and Nonparametric Methods for Comparing Biomarker Levels between Groups. (Doctoral Dissertation). University of Kentucky. Retrieved from https://uknowledge.uky.edu/statistics_etds/44
Chicago Manual of Style (16th Edition):
Li, Yuntong. “Semiparametric and Nonparametric Methods for Comparing Biomarker Levels between Groups.” 2020. Doctoral Dissertation, University of Kentucky. Accessed March 08, 2021.
https://uknowledge.uky.edu/statistics_etds/44.
MLA Handbook (7th Edition):
Li, Yuntong. “Semiparametric and Nonparametric Methods for Comparing Biomarker Levels between Groups.” 2020. Web. 08 Mar 2021.
Vancouver:
Li Y. Semiparametric and Nonparametric Methods for Comparing Biomarker Levels between Groups. [Internet] [Doctoral dissertation]. University of Kentucky; 2020. [cited 2021 Mar 08].
Available from: https://uknowledge.uky.edu/statistics_etds/44.
Council of Science Editors:
Li Y. Semiparametric and Nonparametric Methods for Comparing Biomarker Levels between Groups. [Doctoral Dissertation]. University of Kentucky; 2020. Available from: https://uknowledge.uky.edu/statistics_etds/44
26.
Tušar, Irena.
Presoja blaginjskih učinkov razmer na trgu prašičev v Sloveniji s pomočjo linearnega tržnega modela delnega ravnovesja.
Degree: 2014, Univerza v Mariboru
URL: https://dk.um.si/IzpisGradiva.php?id=44899
;
https://dk.um.si/Dokument.php?id=64702&dn=
► Ekonomiko blaginje uporabljajo analitiki za določitev ekonomske učinkovitosti razdelitve virov in za ugotavljanje primernosti poseganja na trge. Ta tehnika s pomočjo metode rent proučuje učinke…
(more)
▼ Ekonomiko blaginje uporabljajo analitiki za določitev ekonomske učinkovitosti razdelitve virov in za ugotavljanje primernosti poseganja na trge. Ta tehnika s pomočjo metode rent proučuje učinke sprememb na trgu določene dobrine, zato jo agrarni ekonomisti uporabljajo za presojo učinkov kmetijske politike. Z ekonomiko blaginje lahko ocenjujemo, kdo pridobiva in kdo izgublja, pa naj je to ali zaradi neuspeha na trgu ali zaradi vladnega poseganja na trg določene dobrine. Metoda loči tri osnovne družbene skupine, proizvajalce, potrošnike in davkoplačevalce oziroma proračun, ter proučuje koristi ali izgube teh skupin ob določenem stanju na trgu. Z metodo rent se poskuša odgovoriti na vprašanje, ali se javna sredstva od potrošnikov in davkoplačevalcev prenašajo k pridelovalcem z večjo ali manjšo izgubo ekonomske učinkovitosti. Slovensko slovstvo na področju kmetijskih ved ne pozna veliko del, ki bi poglobljeno uporabljala ekonomiko blaginje in teorijo
rent. Magistrsko delo vsebuje pregled teorije o ekonomiki blaginje in njene uporabe pri proučevanju razmer na kmetijskih trgih. Predstavljen je slovenski trg prašičjega mesa, kjer so ekonomski vplivi neugodni in razmere na trgu nepredvidljive. V magistrskem delu smo razvili preprost linearni, a izvirni model delnega ravnovesja, ki omogoča ocenjevanje rent udeležencev na trgu proučevane dobrine, ki v Sloveniji za tovrstne analize še ni bila uporabljena. Vsebinsko tako nismo zasledili obravnave pristopnih učinkov na kmetijstvo. Potrdili smo, da je metoda ekonomike blaginje praktično orodje, ki odločevalcem v politiki omogoča hiter in enostaven prikaz, kdo od udeležencev na obravnavanem trgu in koliko v določeni situaciji pridobi ali izgubi, torej kdo ima zaradi sprememb na trgu ali zaradi vladne politike pozitivne in kdo negativne rente, v kakšni višini ter kakšna je skupna blaginja. V magistrskem delu so prikazane rente, ki so jih bili deležni prašičerejci, potrošniki prašičjega mesa
in davkoplačevalci (državni poračun) v obdobju od leta 2000 do leta 2012. Rente so prikazane v treh ključnih obdobjih: pred vstopom Slovenije v Evropsko unijo od leta 2000 do leta 2003, v času po vstopu v Evropsko unijo od leta 2004 do leta 2007 in v času ekonomske krize od leta 2008 do leta 2012. V obdobju od leta 2000 do leta 2003 so bili prašičerejci deležni največjih rent, nasprotno so imeli potrošniki največje izgube, skupna učinkovitost prenosa sredstev porabnikov na prašičerejce pa je bila negativna. To so negativni učinki zaščite domačega trga z doseganjem višjih cen. Potrošniki so rente prašičerejcev in proračuna plačali z manjšim povpraševanjem in s pokrivanjem proizvodnih stroškov, povezanih z dodatno pridelavo. V obdobju od leta 2004 do leta 2007 so bili slovenski prašičerejci deležni manjših rent, potrošniki pa so imeli manjše izgube. Ekonomska učinkovitost prenosa sredstev porabnikov na prašičerejce je bila spet negativna. V zadnjem obravnavanem obdobju od leta 2008 do
leta 2012 se je uvoz prašičjega mesa v Slovenijo zelo povečal, zaradi nižjih cen pa so imeli slovenski…
Advisors/Committee Members: Erjavec, Emil.
Subjects/Keywords: ekonomika blaginje; renta; trg prašičjega mesa; ekonomski učinki na blaginjo; modeli delnega ravnovesja; welfare economics; surplus; pork market; economic effects on welfare; partial equilibrium models
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Tušar, I. (2014). Presoja blaginjskih učinkov razmer na trgu prašičev v Sloveniji s pomočjo linearnega tržnega modela delnega ravnovesja. (Masters Thesis). Univerza v Mariboru. Retrieved from https://dk.um.si/IzpisGradiva.php?id=44899 ; https://dk.um.si/Dokument.php?id=64702&dn=
Chicago Manual of Style (16th Edition):
Tušar, Irena. “Presoja blaginjskih učinkov razmer na trgu prašičev v Sloveniji s pomočjo linearnega tržnega modela delnega ravnovesja.” 2014. Masters Thesis, Univerza v Mariboru. Accessed March 08, 2021.
https://dk.um.si/IzpisGradiva.php?id=44899 ; https://dk.um.si/Dokument.php?id=64702&dn=.
MLA Handbook (7th Edition):
Tušar, Irena. “Presoja blaginjskih učinkov razmer na trgu prašičev v Sloveniji s pomočjo linearnega tržnega modela delnega ravnovesja.” 2014. Web. 08 Mar 2021.
Vancouver:
Tušar I. Presoja blaginjskih učinkov razmer na trgu prašičev v Sloveniji s pomočjo linearnega tržnega modela delnega ravnovesja. [Internet] [Masters thesis]. Univerza v Mariboru; 2014. [cited 2021 Mar 08].
Available from: https://dk.um.si/IzpisGradiva.php?id=44899 ; https://dk.um.si/Dokument.php?id=64702&dn=.
Council of Science Editors:
Tušar I. Presoja blaginjskih učinkov razmer na trgu prašičev v Sloveniji s pomočjo linearnega tržnega modela delnega ravnovesja. [Masters Thesis]. Univerza v Mariboru; 2014. Available from: https://dk.um.si/IzpisGradiva.php?id=44899 ; https://dk.um.si/Dokument.php?id=64702&dn=

University of Southern California
27.
Iyer, Ramakrishnan.
Minimal string theories and integrable hierarchies.
Degree: PhD, Physics, 2011, University of Southern California
URL: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/648587/rec/4089
► Well-defined, non-perturbative formulations of the physics of string theories in specific minimal or superminimal model backgrounds can be obtained by solving matrix models in the…
(more)
▼ Well-defined, non-perturbative formulations of the
physics of string theories in specific minimal or superminimal
model backgrounds can be obtained by solving matrix
models in the
double scaling limit. They provide us with the first examples of
completely solvable string theories. Despite being relatively
simple compared to higher-dimensional critical string theories,
they furnish non-perturbative descriptions of interesting physical
phenomena such as geometrical transitions between D-branes and
fluxes, tachyon condensation and holography. ❧ The physics of these
theories in the minimal model backgrounds is succinctly encoded in
a non-
linear differential equation known as the string equation,
along with an associated hierarchy of integrable
partial
differential equations (PDEs). The bosonic string in (2, 2m - 1)
conformal minimal model backgrounds and the type 0A string in (2,
4m) superconformal minimal model backgrounds have the Korteweg-de
Vries system, while type 0B in (2, 4m) backgrounds has the
Zakharov-Shabat system. The integrable PDE hierarchy governs flows
between backgrounds with different m. ❧ In this thesis, we explore
this interesting connection between minimal string theories and
integrable hierarchies further. We uncover the remarkable role that
an infinite hierarchy of non-
linear differential equations plays in
organizing and connecting certain minimal string theories
non-perturbatively. We are able to embed the type 0A and 0B (A,A)
minimal string theories into this single framework. The string
theories arise as special limits of a rich system of equations
underpinned by an integrable system known as the dispersive water
wave hierarchy. We find that there are several other string–like
limits of the system, and conjecture that some of them are type IIA
and IIB (A,D) minimal string backgrounds. We explain how these and
several other string–like special points arise and are connected.
In some cases, the framework endows the theories with a
non–perturbative definition for the first time. Notably, we
discover that the Painleve IV equation plays a key role in
organizing the string theory physics, joining its siblings,
Painleve I and II, whose roles have previously been identified in
this minimal string context. ❧ We then present evidence that the
conjectured type II theories have smooth nonperturbative solutions,
connecting two perturbative asymptotic regimes, in a ’t Hooft
limit. Our technique also demonstrates evidence for new minimal
string theories that are not apparent in a perturbative
analysis.
Advisors/Committee Members: Johnson, Clifford V. (Committee Chair), Pilch, Krzysztof (Committee Member), Haas, Stephan (Committee Member), Dappen, Werner (Committee Member), Bonahon, Francis (Committee Member).
Subjects/Keywords: string theory; conformal field theory; minimal models; integrable hierarchies; painleve equations; non-linear partial and ordinary differential
equations; dispersive water waves; random matrix models; type 0 minimal string theories
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Iyer, R. (2011). Minimal string theories and integrable hierarchies. (Doctoral Dissertation). University of Southern California. Retrieved from http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/648587/rec/4089
Chicago Manual of Style (16th Edition):
Iyer, Ramakrishnan. “Minimal string theories and integrable hierarchies.” 2011. Doctoral Dissertation, University of Southern California. Accessed March 08, 2021.
http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/648587/rec/4089.
MLA Handbook (7th Edition):
Iyer, Ramakrishnan. “Minimal string theories and integrable hierarchies.” 2011. Web. 08 Mar 2021.
Vancouver:
Iyer R. Minimal string theories and integrable hierarchies. [Internet] [Doctoral dissertation]. University of Southern California; 2011. [cited 2021 Mar 08].
Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/648587/rec/4089.
Council of Science Editors:
Iyer R. Minimal string theories and integrable hierarchies. [Doctoral Dissertation]. University of Southern California; 2011. Available from: http://digitallibrary.usc.edu/cdm/compoundobject/collection/p15799coll127/id/648587/rec/4089

Georgia Tech
28.
Chung, Gi Yun.
An analytical approach to real-time linearization of a gas turbine engine model.
Degree: PhD, Aerospace Engineering, 2013, Georgia Tech
URL: http://hdl.handle.net/1853/50702
► A recent development in the design of control system for a jet engine is to use a suitable, fast and accurate model running on board.…
(more)
▼ A recent development in the design of control system for a jet engine is to use a suitable, fast and accurate model running on board. Development of
linear models is particularly important as most engine control designs are based on
linear control theory. Engine control performance can be significantly improved by increasing the accuracy of the developed model. Current state-of-the-art is to use piecewise
linear models at selected
equilibrium conditions for the development of set point controllers, followed by scheduling of resulting controller gains as a function of one or more of the system states. However, arriving at an effective gain scheduler that can accommodate fast transients covering a wide range of operating points can become quite complex and involved, thus resulting in a sacrifice on controller performance for its simplicity.
This thesis presents a methodology for developing a control oriented analytical
linear model of a jet engine at both
equilibrium and off-
equilibrium conditions. This scheme requires a nonlinear engine model to run onboard in real time. The off-
equilibrium analytical
linear model provides improved accuracy and flexibility over the commonly used piecewise
linear models developed using numerical perturbations.
Linear coefficients are obtained by evaluating, at current conditions, analytical expressions which result from differentiation of simplified nonlinear expressions. Residualization of the fast dynamics states are utilized since the fast dynamics are typically outside of the primary control bandwidth. Analytical expressions based on the physics of the aerothermodynamic processes of a gas turbine engine facilitate a systematic approach to the analysis and synthesis of model based controllers. In addition, the use of analytical expressions reduces the computational effort, enabling linearization in real time at both
equilibrium and off-
equilibrium conditions for a more accurate capture of system dynamics during aggressive transient maneuvers.
The methodology is formulated and applied to a separate flow twin-spool turbofan engine model in the Numerical Propulsion System Simulation (NPSS) platform. The fidelity of
linear model is examined by validating against a detailed nonlinear engine model using time domain response, the normalized additive uncertainty and the nu-gap metric. The effects of each simplifying assumptions, which are crucial to the
linear model development, on the fidelity of the
linear model are analyzed in detail. A case study is performed to investigate the case when the current state (including both slow and fast states) of the system is not readily available from the nonlinear simulation model. Also, a simple model based control is used to illustrate benefits of using the proposed modeling approach.
Advisors/Committee Members: Prasad, J. V. R. (advisor), Feron, Eric M. (committee member), German, Brian (committee member), Dhingra, Manuj (committee member), Meisner, Richard (committee member).
Subjects/Keywords: Analytical linearization, Real-time linearization; Off-equilibrium linearization; Off-equilibrium analytical linear model; Jet engine control; Gas turbine engine model based control; Control oriented model; Linear models (Statistics); Jet engines; Jet engines Control systems; Control theory
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Chung, G. Y. (2013). An analytical approach to real-time linearization of a gas turbine engine model. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/50702
Chicago Manual of Style (16th Edition):
Chung, Gi Yun. “An analytical approach to real-time linearization of a gas turbine engine model.” 2013. Doctoral Dissertation, Georgia Tech. Accessed March 08, 2021.
http://hdl.handle.net/1853/50702.
MLA Handbook (7th Edition):
Chung, Gi Yun. “An analytical approach to real-time linearization of a gas turbine engine model.” 2013. Web. 08 Mar 2021.
Vancouver:
Chung GY. An analytical approach to real-time linearization of a gas turbine engine model. [Internet] [Doctoral dissertation]. Georgia Tech; 2013. [cited 2021 Mar 08].
Available from: http://hdl.handle.net/1853/50702.
Council of Science Editors:
Chung GY. An analytical approach to real-time linearization of a gas turbine engine model. [Doctoral Dissertation]. Georgia Tech; 2013. Available from: http://hdl.handle.net/1853/50702
29.
Maria LÃcia Costa Teles.
Impacto do Pronaf na produÃÃo agrÃcola dos municÃpios cearenses.
Degree: Master, 2007, Universidade Federal do Ceará
URL: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2086
;
► VÃrios estudos relacionam a modernizaÃÃo imposta à agricultura nacional â perÃodo de elevado crescimento da agricultura brasileira â à desatenÃÃo do Estado em relaÃÃo aos…
(more)
▼ VÃrios estudos relacionam a modernizaÃÃo imposta à agricultura nacional â perÃodo de elevado crescimento da agricultura brasileira â à desatenÃÃo do Estado em relaÃÃo aos pequenos produtores. O debate sobre as potencialidades da agricultura familiar brasileira tem sido muito freqÃente na pauta dos atores econÃmicos e sociais do Brasil. Para atender parte da sociedade rural brasileira que reivindicava um modelo diferente para a agricultura nacional e, principalmente, buscando encontrar as alternativas que pudessem minimizar a pobreza rural, foi criado em 1996, a partir de estudos acerca da agricultura familiar no Brasil, o Programa Nacional de Fortalecimento da Agricultura Familiar â PRONAF. O presente trabalho tem por objetivo avaliar o impacto do PRONAF na produÃÃo agrÃcola dos municÃpios do estado do CearÃ. Tomando como base dados secundÃrios, construiu-se um modelo economÃtrico
log-
linear, de onde se buscou analisar o impacto do crÃdito do PRONAF no valor adicionado agropecuÃrio das seis mesoregiÃes que compÃem o estado. A partir de estimativas estatisticamente robustas, comprovou se que os recursos despendidos pelo PRONAF impactam positivamente sobre a mÃdia do valor adicionado agropecuÃrio dos municÃpios do CearÃ. Ressalve-se que, quando analisado interativamente com um conjunto de municÃpios com caracterÃsticas semelhantes, as âmesoregiÃesâ, o efeito à reduzido, de acordo com a participaÃÃo da atividade agropecuÃria de cada regiÃo, conforme seria esperado.
Advisors/Committee Members: FlÃvio Ataliba Flexa Daltro Barreto, Sandra Maria dos Santos, Ronaldo de Albuquerque e Arraes.
Subjects/Keywords: ECONOMIA; agricultura familiar; crÃdito rural; pronaf; regressÃo log-
linear; agriculture familiale, crÃdit rural, pronaf, modÃle log-linear
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APA (6th Edition):
Teles, M. L. C. (2007). Impacto do Pronaf na produÃÃo agrÃcola dos municÃpios cearenses. (Masters Thesis). Universidade Federal do Ceará. Retrieved from http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2086 ;
Chicago Manual of Style (16th Edition):
Teles, Maria LÃcia Costa. “Impacto do Pronaf na produÃÃo agrÃcola dos municÃpios cearenses.” 2007. Masters Thesis, Universidade Federal do Ceará. Accessed March 08, 2021.
http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2086 ;.
MLA Handbook (7th Edition):
Teles, Maria LÃcia Costa. “Impacto do Pronaf na produÃÃo agrÃcola dos municÃpios cearenses.” 2007. Web. 08 Mar 2021.
Vancouver:
Teles MLC. Impacto do Pronaf na produÃÃo agrÃcola dos municÃpios cearenses. [Internet] [Masters thesis]. Universidade Federal do Ceará 2007. [cited 2021 Mar 08].
Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2086 ;.
Council of Science Editors:
Teles MLC. Impacto do Pronaf na produÃÃo agrÃcola dos municÃpios cearenses. [Masters Thesis]. Universidade Federal do Ceará 2007. Available from: http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=2086 ;
30.
Rule, Michael Everett.
Collective Neural Dynamics in Primate Motor Cortex.
Degree: PhD, Neuroscience, 2016, Brown University
URL: https://repository.library.brown.edu/studio/item/bdr:674356/
► Understanding the neural dynamics of action selection, planning, and execution is necessary to treat motor system disorders. This task is complicated by the fact that…
(more)
▼ Understanding the neural dynamics of action selection,
planning, and execution is necessary to treat motor system
disorders. This task is complicated by the fact that neural
correlates of motor control are distributed: Single neurons rarely
exert large influences over the trajectory of the brain state as a
whole. Rather, brain states evolve according to the collective
dynamics emerging in ensembles of interacting neurons. In this
thesis I address three questions regarding collective dynamics
reflected in local field potentials (LFPs) during preparation and
execution of reach and grasp actions: (1) How do collective
dynamics affect single-neuron spiking during movement execution?
(2) How do single-neuron and population spiking relate to ongoing
~20 Hz β-LFP oscillations? (3) What are the spatiotemporal
properties of these β-LFP oscillations? In anesthetized sensory
cortex, LFPs can reflect spontaneous collective activity and
explain excess neural variability. In contrast, I find that motor
cortex LFPs during movement do not explain spiking variability
beyond that explained by the kinematics of the reaching and
grasping task examined. I show that such spiking variability is
composed of a slow movement-related component, and a fast component
related to stochastic spiking history effects. These findings
support the theory that motor cortex collective dynamics reflected
in LFPs directly relate to the control and execution of movement.
During movement preparation, β activity is elevated in both LFP and
neuronal spiking. I find that β-rhythmic spiking can be dissociated
from β-LFP oscillations. These results constrain
models of
preparatory motor steady-states and raise questions about the
relationship between single-neuron spiking and population
oscillations. Furthermore, studies have found planar traveling
β-waves in motor cortex. I show that spatiotemporal dynamics in
β-oscillations can be much more diverse. Comparing β-waves to
optogenetically-induced traveling gamma waves supports the theory
that β-waves represent phase reorganization in local ongoing
oscillations, rather than propagating waves of excitation. The
statistical properties of motor cortex collective dynamics revealed
and characterized in this thesis inform biophysical
models of
cortical function, with applications to research, neuroprosthetics,
and closed-loop neuromodulation.
Advisors/Committee Members: Truccolo, Wilson (Director), Donoghue, John (Reader), Moore, Christopher (Reader), Paradiso, Michael (Reader), Ermentrout, George (Reader).
Subjects/Keywords: generalized linear models
Record Details
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Record Details
Similar Records
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❌
APA ·
Chicago ·
MLA ·
Vancouver ·
CSE |
Export
to Zotero / EndNote / Reference
Manager
APA (6th Edition):
Rule, M. E. (2016). Collective Neural Dynamics in Primate Motor Cortex. (Doctoral Dissertation). Brown University. Retrieved from https://repository.library.brown.edu/studio/item/bdr:674356/
Chicago Manual of Style (16th Edition):
Rule, Michael Everett. “Collective Neural Dynamics in Primate Motor Cortex.” 2016. Doctoral Dissertation, Brown University. Accessed March 08, 2021.
https://repository.library.brown.edu/studio/item/bdr:674356/.
MLA Handbook (7th Edition):
Rule, Michael Everett. “Collective Neural Dynamics in Primate Motor Cortex.” 2016. Web. 08 Mar 2021.
Vancouver:
Rule ME. Collective Neural Dynamics in Primate Motor Cortex. [Internet] [Doctoral dissertation]. Brown University; 2016. [cited 2021 Mar 08].
Available from: https://repository.library.brown.edu/studio/item/bdr:674356/.
Council of Science Editors:
Rule ME. Collective Neural Dynamics in Primate Motor Cortex. [Doctoral Dissertation]. Brown University; 2016. Available from: https://repository.library.brown.edu/studio/item/bdr:674356/
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