Yazar "Yazıcı, Berna" için listeleme
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Misusage of statistics in medical research
Ercan, İlker; Yazıcı, Berna; Yang, Y.; Özkaya, G.; CanGür, S.; Ediz, B.; Kan, I. (2007)The inappropriate use of statistical method and technique cause time and cost losts and it can be misleading to other scientific researhes. So in this study the main statistical error sources in medical research are discussed ... -
Modeling the contribution of distance education to students’ preparation for the professions
Çavuş, Mustafa; Kan Kılınç, Betül; Yazıcı, Berna (Anadolu Üniversitesi, 2021)There is an increasing interest in predicting the contribution level of open and distance learning to students’ career, in order to perceive the pathway for higher quality standards. For this purpose, Anadolu University ... -
Modelling Extreme Rainfalls Using Generalized Additive Models for Location, Scale and Shape Parameters
Sezer, Ahmet; Kan Kılınç, Betül; Yazıcı, Berna (Corvinus University Budapest, 2016)This study aims to model the nonlinear relationship between the daily amount of extreme rainfall and significant predictor variables by the Generalized additive models for location, scale and shape parameters (GAMLSS). ... -
Modi?ed tests for comparison of group means under heteroskedasticity and non-normality caused by outlier(s)
Çavuşoğlu, Mustafa; Yazıcı, Berna; Sezer, Ahmet (2017)There are several approximate tests proposed such as Welch's F-test (W), the Parametric Bootstrap Test (PB) and Generalized F-test (GF) for comparing several group means under heteroskedasticity. These tests are powerful ... -
Modified generalized p-value and confidence interval by Fisher's fiducial approach
Ozkip, Evren; Yazıcı, Berna; Sezer, Ahmet (Hacettepe University, Fac Sci, 2017)In this study, we develop two simple generalized confidence intervals for the difference between means of two normal populations with heteroscedastic variances which is usually referred to as the Behrens-Fisher problem. ... -
Modified tests for comparison of group means under heteroskedasticity and non-normality caused by outlier(s)
Çavuş, Mustafa; Yazıcı, Berna; Sezer, Ahmet (Hacettepe University, Fac Sci, 2017)There are several approximate tests proposed such as Welch's F-test (W), the Parametric Bootstrap Test (PB) and Generalized F-test (GF) for comparing several group means under heteroskedasticity. These tests are powerful ... -
Multivariate Analyses of Heavy Metals in Surface Soil Around an Organized Industrial Area in Eskisehir, Turkey
Malkoç, Semra; Yazıcı, Berna (Springer, 2017)A total of 50 surface industrial area soil in Eskisehir, Turkey were collected and the concentrations of As, Cr, Cd, Co, Cu, Ni, Pb, Zn, Fe and Mg, at 11.34, 95.8, 1.37, 15.28, 33.06, 143.65, 14.34, 78.79 mg/kg, 188.80% ... -
Parametrik bootstrap yöntemine dayalı hipotez testleri ve güven aralıkları
Özkip, Evren (Anadolu Üniversitesi, 2015)Klasik testler, nuisance parametre içeren basit problemler için dahi tam olasılıklı çözüm sağlamayabilirler. Nuisance parametrelerden kaynaklanan problemi gidermek için bir çeşit Monte Carlo metodu olan parametrik bootstrap ... -
The Profile of Law Clerks Using Judiciary Informatics in Turkey
Sungür, Zerrin; Alpu, Özlem; Oktal, Özlem; Yazıcı, Berna (Springer-Verlag Berlin, 2013)The automation of judicial services got it's start in 1998 in Turkey. In order to increase performance and productivity of these services many regulations have been made in parallel with the innovations and improvements ... -
The profile of law clerks using judiciary informatics in Turkey
Sungür, Zerrin; Alpu, Özlem; Oktal, Özlem; Yazıcı, Berna (2013)The automation of judicial services got it's start in 1998 in Turkey. In order to increase performance and productivity of these services many regulations have been made in parallel with the innovations and improvements ... -
Robust ridge and robust Liu estimator for regression based on the LTS estimator
Kan Kılınç, Betül; Alpu, Özlem; Yazıcı, Berna (Taylor & Francis LTD, 2013)In the multiple linear regression analysis, the ridge regression estimator and the Liu estimator are often used to address multicollinearity. Besides multicollinearity, outliers are also a problem in the multiple linear ... -
A simulation study on generalized pareto mixture model
Çavuş, M.; Sezer, A.; Yazıcı, Berna (Springer Verlag, 2015)The Generalized Pareto Distribution is commonly used for extreme value problems. Especially, the values which exceed the finite threshold, is the focus in extreme value problems like in insurance sector. The Generalized ... -
Statistical evaluation of remotely sensed data for water quality monitoring
Bilge, F; Yazıcı, Berna; Döğeroğlu, Tuncay; Ayday, Can (Taylor & Francis LTD, 2003)The primary objective of this study was to determine relationships between water quality parameters (WQPs) and digital data from the Landsat satellite to estimate and map the WQP in the Porsuk Dam reservoir. Suspended ... -
Statistical methods and artificial neural networks
Mammadov, Mammadağha; Yazıcı, Berna; Yolaçan, Ş.; Aslanargun, A.; Yüzer, Ali Fuat; Ağaoğlu, E. (2006)Artificial Neural Networks and statistical methods are applied on real data sets for forecasting, classification, and clustering problems. Hybrid models for two components are examined on different data sets; tourist arrival ... -
Trust in adoption to judiciary informatics system of senior management users
Oktal, Özlem; Yazıcı, Berna; Alpu, O.; Sungur, Zerrin (2013)With the start of performing judiciary informatics in Turkey through information systems, especially the adoption of internal users carrying out these activities started to be significant. Senior management users (Chief ... -
Using multivariate adaptive regression splines to estimate pollution in soil
Kan Kılınç, Betül; Malkoc, Semra; Koparal, Ali Savaş; Yazıcı, Berna (Inst Advanced Science Extension, 2017)Heavy metal pollution is one of the main factors of the traffic pollution. The public authorities have been monitoring the concentration of heavy metal by means of sampling stations. This paper describes the response surface ... -
Variable selection with genetic algorithm and multivariate adaptive regression splines in the presence of multicollinearity
Kan Kılınç, Betül; Asikgil, Barış; Erar, Aydın; Yazıcı, Berna (Inst Advanced Science Extension, 2016)In this paper, it is aimed to determine the true regressors explaining the dependent variable in multiple linear regression models and also to find the best model by using two different approaches in the presence of low, ...