Suppose that X represents the stress which is applied to a component and Y is strength of this component. Let X and Y have Exponential Power (EP) distribution with (α1, β1) and (α2, β2) parameters, respectively. In this case, stress-strength reliability (SSR) is shown by P = P (X < Y ). In this study, the SSR for EP distribution are obtained with numerical methods. Also maximum likelihood estimate (MLE) and approximate bayes estimates by using Lindley approximation method under squared-error loss function for SSR under progressive type-II censoring are obtained. Moreover, performances of these estimators are compared in terms of MSEs by using Monte Carlo simulation. Furthermore coverage probabilities of parametric bootstrap estimates are computed. Finally, real data analysis is presented.
In recent years, free fatty acid binding proteins (FABPs) are implicated in spermatogenesis and sperm morphology. FABPs are members of the intracellular lipid-binding protein family; they exhibit tissue specific expression like the FABP9/PERF15 (Perforated15) male germ cell-specific fatty acid linkage-protein.The aim of the study was to assess the levels of seminal FABP-9 in normozoospermic and oligozoospermic men, and the possible relations between seminal FABP-9 levels and semen parameters.Research was carried out on 60 male volunteers who were admitted to Selcuk University Faculty of Medicine of Andrology Laboratory. Normozoospermic individuals (n = 30) were identified as Group 1, and Oligozoospermic individuals (n = 30) were identified as Group 2. The semen samples were collected in sterile plastic containers. Sperm parameters were assessed according to Kruger's criteria. Seminal plasma FABP-9 levels were analyzed by ELISA method. Outcomes were statistically evaluated at 0.05 significance level with SPSS (22.0). The Receiver Operating Characteristic (ROC) curve was used to evaluate the performance of FABP-9 levels as compared to that of the concentration and motility data of the sperm. FABP-9 levels were significantly higher in normozoospermic individuals (3.41 ± 1.64 ng/mL) than in oligozoospermic individuals (1.99 ± 0.78 ng/mL). There were significant correlations between FABP-9 levels and sperm concentration, total sperm count, motility, progressive motility, immobility, Total Progressive Motil Sperm Count (TPMSC), head anomaly, and teratozoospermia index.We suggest that FABP-9 level is an important biomarker, and low levels of semen FABP-9 may impact the fertility status based on the ROC findings.
The aim of this study is to obtain the Bayes estimators and the maximum likelihood estimators (MLEs) for the unknown parameters of the Rayleigh Weibull (RW) distribution based on progres-sive type-II censored samples. The approximate Bayes estimators are calculated using the idea of Lindley and Tierney-Kadane's approximation method under the squared-error loss function when the Bayes estimators are not handed in explicit forms. In this study, the approximate Bayes esti-mates are compared with the maximum likelihood estimates in the aspect of the estimated risks (ERs) using Monte Carlo simulation. In addition, the coverage probabilities of the parametric bootstrap estimates are calculated. Real lifetime data sets belonging to the cancer types as bladder cancer, head and neck cancer, and leukemia are used to illustrate the emprical results belonging to the approximate Bayes estimates, the maximum likelihood estimates, and the parametric bootstrap intervals.
Aim: Chronic urticaria is a condition that requires long-term treatment. In recent years, many countries have created their own guides to evaluate urticaria diagnosis and treatment approaches in an algorithm. In this study, we aimed to evaluate the distribution of patients with chronic urticaria treated in our clinic according to the treatment algorithm the "Turkey Urticaria Diagnosis and Treatment Guide" Material and Method: The files of the patients who applied to the dermatology clinic of our hospital and were followed up and treated with a diagnosis of chronic urticaria were investigated. Results: A total of 102 patients with chronic urticaria were included in the study. According to this guide, 17.6% of patients responded with standard dose antihistamine therapy, while the antihistamine dose given in 15.7% of patients was increased. The antihistamine treatment of 5.7% of patients was replaced by a different group of antihistamines at the same dose as the previous one. 52% of patients responded to omalizumab 300 mg/subcutaneous treatment every 28 days. However, 7.8% of the patients received omalizumab treatment every 14 days or cyclosporine treatment was required to be added to omalizumab treatment. Response to other treatments other than standard treatments was received in 1% of patients. Conclusion:We believe that our study will facilitate predicting the treatment responses of patients in clinical practice by shedding light on the distribution of chronic urticaria patients according to the treatment algorithm.
In this study, the stress-strength reliability, R = P(Y < X) where Y represents the stress of a component and X represents this component’s strength, is obtained when X and Y have two independents generalized Gompertz distribution with different shape parameters under progressive type-II censoring. The Bayes and maximum likelihood estimators of stress-strength reliability can not be acquired in closed forms. The approximate Bayes estimators under squared error loss function by using Lindley’s approximations for stressstrength reliability are derived. A Monte Carlo simulation study is done to check performances of the approximate Bayes against performances of maximum likelihood estimators and observe the coverage probabilities and the intervals’ average width. In addition, the coverage probabilities of the parametric bootstrap estimates are calculated. Two applications based on real datasets are provided.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.