Yasemin Yavuz

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As a result of rapid developments in production technologies in recent years, flexible jobshop scheduling problems have become increasingly significant. This paper deals with two NP-hard optimization problems: flexible job-shop scheduling problems (FJSPs) that encompass routing and sequencing sub-problems, and the FJSPs with process plan flexibility(More)
The use of joint models that are capable of handling different data types is becoming increasingly popular in biopharmaceutical practice. Evaluation of various statistical techniques that have been developed for mixed data in simulated environments requires joint generation of multiple variables. In this article, we propose a unified framework for(More)
Adult spinal deformity (ASD) is a major public health problem. There are pros and cons of the available treatment alternatives (surgical or non-surgical) and it had been difficult to identify the best treatment modality. To construct a statistical DA model to identify the optimum overall treatment in ASD. From an international multicentre database of ASD(More)
OBJECTIVE The aim of this study was to analyze the impact of treatment complications on outcomes in adult spinal deformity (ASD) using a decision analysis (DA) model. METHODS The study included 535 ASD patients (371 with non-surgical (NS) and 164 with surgical (S) treatment) from an international multicentre database of ASD patients. DA was structured in(More)
OBJECTIVES To assess the in vitro diagnostic ability of CBCT images using seven different display types in the detection of recurrent caries. METHODS Our study comprised 128 extracted human premolar and molar teeth. 8 groups each containing 16 teeth were obtained as follows: (1) Black Class I (Occlusal) amalgam filling without caries; (2) Black Class I(More)
BACKGROUND The restoration of normal sagittal alignment is a critical goal in adult spinal deformity surgery to achieve favorable outcomes and prevent mechanical complications. Schwab sagittal modifiers have been accepted as targets for appropriate alignment, but addressing these targets does not always prevent high mechanical complication or revision(More)
In this study, an attempt was made to determine the degrees of bias in particular sampling sizes and methods. The aim of the study was to determine deviations from the median, the mean, and the standard deviation (SD) in different sample sizes and at different censoring rates for log-normal, exponential, and Weibull distributions in the case of full and(More)
BACKGROUND Previous studies demonstrated the adult spinal deformity (ASD) population is heterogeneous. Multiple parameters may affect health-related quality of life (HRQL). AIM To understand the ranking of parameters affecting HRQL in ASD using multiple regression analysis. PATIENTS AND METHODS A total of 483 patients enrolled in a prospective(More)
INTRODUCTION Early-onset scoliosis (EOS) can have negative effects on the developing thorax, lungs, and quality of life in general. Children with EOS can face various health problems and require recurring hospitalization and surgeries. Radiographic parameters are insufficient to evaluate the severity and efficacy of treatment in EOS. Early-onset Scoliosis(More)
Objectives: Health professionals are very important for improving the health status of the society and maintaining a healthy life. The aim of the present study is to model the number of persons per physician via Box-Jenkins and exponential smoothing methods and trend models, to compare these models, and to make estimations for the future. ARIMA or(More)
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