16 research outputs found

    Operational Research: Methods and Applications

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    Throughout its history, Operational Research has evolved to include a variety of methods, models and algorithms that have been applied to a diverse and wide range of contexts. This encyclopedic article consists of two main sections: methods and applications. The first aims to summarise the up-to-date knowledge and provide an overview of the state-of-the-art methods and key developments in the various subdomains of the field. The second offers a wide-ranging list of areas where Operational Research has been applied. The article is meant to be read in a nonlinear fashion. It should be used as a point of reference or first-port-of-call for a diverse pool of readers: academics, researchers, students, and practitioners. The entries within the methods and applications sections are presented in alphabetical order

    Assessment of Ophtalmologists' Approach to Medical, Legal and Ethical Problems in Process of Corneal Transplantation

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    Objective: This study was carried out with the aim of investigating medical, ethical and legal problems experienced in the course of cornea transplantation and developing new recommendations in the light of the data obtained from ophthalmologists. Material and Methods: The study was carried out in the ophthalmology clinics of the hospitals affiliated to the Istanbul Health Management. Using a questionnaire, the researchers attempted to determine the level of awareness of the doctors on the issue of cornea donation. A total of 81 ophthalmologists aged between 24 and 54 years, with an experience ranging from 1 to 27 years participated in the study. Results: According to the results obtained from the questionnaire, the number of corneal transplantations carried out by the ophthalmologists included in the study increased significantly with age and professional experience. Below are the percentages of the ophthalmologists and the number of corneal transplantations that they have carried out: 66.7%-none; 11.1%-between 1 and 20; 8.6%-between 11 and 20; 2.5%-between 21 and 50; 1.11%-51 and more. The vast majority of the participants in all the age groups were opposed to the constitution of a national cornea waiting list. It was observed that, as the ophthalmologists gained experience, they became more likely to be accused of unauthorized cornea transplantation. Conclusion: As a result of this study, new recommendations have been developed in order to increase the number of cornea donations in our country and help ophthalmologists to become more aware of the legal procedures and regulations. Cornea centres in various hospitals should be transformed into regional, independent centers so that more cornea removals can be performed. Besides, corneal transplantation should first aim treating the patient, not a cosmetic surgery

    Assessment of Ophtalmologists’ Approach to Medical, Legal and Ethical Problems in Process of Corneal Transplantation

    No full text
    Objective: This study was carried out with the aim of investigating medical, ethical and legal problems experienced in the course of cornea transplantation and developing new recommendations in the light of the data obtained from ophthalmologists. Material and Methods: The study was carried out in the ophthalmology clinics of the hospitals affiliated to the Istanbul Health Management. Using a questionnaire, the researchers attempted to determine the level of awareness of the doctors on the issue of cornea donation. A total of 81 ophthalmologists aged between 24 and 54 years, with an experience ranging from 1 to 27 years participated in the study. Results: According to the results obtained from the questionnaire, the number of corneal transplantations carried out by the ophthalmologists included in the study increased significantly with age and professional experience. Below are the percentages of the ophthalmologists and the number of corneal transplantations that they have carried out: 66.7%-none; 11.1%-between 1 and 20; 8.6%-between 11 and 20; 2.5%-between 21 and 50; 1.11%-51 and more. The vast majority of the participants in all the age groups were opposed to the constitution of a national cornea waiting list. It was observed that, as the ophthalmologists gained experience, they became more likely to be accused of unauthorized cornea transplantation. Conclusion: As a result of this study, new recommendations have been developed in order to increase the number of cornea donations in our country and help ophthalmologists to become more aware of the legal procedures and regulations. Cornea centres in various hospitals should be transformed into regional, independent centers so that more cornea removals can be performed. Besides, corneal transplantation should first aim treating the patient, not a cosmetic surgery

    Histological Results of Sclerotherapy, Phototherapy, and Pulsed 980-nm Laser Irradiation of the Dorsal Rabbit Ear Vein

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    Objective: To compare the histological changes occurring after three different treatment modalities for telangiectasias

    Inhibitory effects of ticlopidine and clopidogrel on the intimal hyperplastic response after arterial injury

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    Objective: The purpose of this study was to compare the effects of ticlopidine and clopidogrel on the development of neointimal hyperplasia after experimental arterial injury
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