نتایج جستجو برای: failure mode and effect analysis fmea

تعداد نتایج: 17631242  

Journal: :Medical physics 2010
Amit Sawant Sonja Dieterich Michelle Svatos Paul Keall

PURPOSE To develop and implement a failure mode and effect analysis (FMEA)-based commissioning and quality assurance framework for dynamic multileaf collimator (DMLC) tumor tracking systems. METHODS A systematic failure mode and effect analysis was performed for a prototype real-time tumor tracking system that uses implanted electromagnetic transponders for tumor position monitoring and a DML...

2011
Lachlan Murray Wenguo Liu Alan F. T. Winfield Jonathan Timmis Andrew M. Tyrrell

In this paper, the reliability of a collective robotic system is analysed using two different techniques from the field of reliability engineering. The techniques, Failure Mode and Effect Analysis (FMEA) and Fault Tree Analysis (FTA), are used to analyse and compare two variants of a previously developed ‘autonomous morphogenesis’ controller. The reliability of the controller is discussed and a...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1391

we have two part in this thesis, at first: the interaction of native calf thymus dna (ct-dna) with two anthraquinones including quinizarin (1,4- dihydroxy anthraquinone) and danthron (1,8- dihydroxy anthraquinone) in a mixture of 0.04 m brittone-robinson buffer and 50% of ethanol were studied at physiological ph by uv-vis absorption, florescence, circular dichroism spectroscopic methods, viscos...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تحصیلات تکمیلی علوم پایه زنجان - دانشکده شیمی 1391

in this thesis a calibration transfer method is used to achieve bilinearity for augmented first order kinetic data. first, the proposed method is investigated using simulated data and next the concept is applied to experimental data. the experimental data consists of spectroscopic monitoring of the first order degradation reaction of carbaryl. this component is used for control of pests in frui...

2017
Zhila Najafpour Mojtaba Hasoumi Faranak Behzadi Efat Mohamadi Mohamadreza Jafary Morteza Saeedi

BACKGROUND Failure Mode and Effect Analysis (FMEA) is a method used to assess the risk of failures and harms to patients during the medical process and to identify the associated clinical issues. The aim of this study was to conduct an assessment of blood transfusion process in a teaching general hospital, using FMEA as the method. METHODS A structured FMEA was recruited in our study performe...

Journal: :Transfusion 2013
Yao Lu Fang Teng Jie Zhou Aiqing Wen Yutian Bi

BACKGROUND The aim of blood transfusion risk management is to improve the quality of blood products and to assure patient safety. We utilize failure mode and effect analysis (FMEA), a tool employed for evaluating risks and identifying preventive measures to reduce the risks in blood transfusion. STUDY DESIGN AND METHODS The failure modes and effects occurring throughout the whole process of b...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد 1390

برای محافظت از جنگل ها و مراتع در مقابل خطر آتش سوزی یکی از اولین استراتژی های که مورد توجه قرار می گیرد، تعیین مناطق مستعد وقوع آتش سوزی است. تعیین میزان خطر آتش بخشی از مدل سازی در فرایند آتش سوزی محسوب می شود؛ که بیشتر جنبه های مدیریتی و کنترلی را در بر می گیرد. در تحقیق حاضر با توجه به آتش سوزی های گزارش شده در طی سال های 89-86 در اراضی طبیعی استان چهارمحال و بختیاری مهمترین عوامل تاثیر گذا...

Alireza Shahraki, Faranak Hosseinzadeh Saljooghi, Mehri Mangeli Kamsefidi,

Introduction: Failure Mode and Effects Analysis (FMEA) is a structured way to find and understand the states of a system’s failure and to calculate the resulting effects. In this method, which has been criticized by many researchers, the risk priority number is obtained for each failure mode based on the multiplication of the three parameters of occurrence (O), severity (S) and detection (D). I...

Journal: Evidence Based Care 2014

Background and Aim : Emergency ward is among hospital areas with high risk of errors, thus, implementing measures to identify and correct the errors is essential. The object of this study is to identify and assess the errors of the process of admitting patients in Emergency Department of Imam Reza Hospital using Failure Mode Effects Analysis, as one of the tools to assess and manage risk, as we...

2008
Chris Price Neal Snooke

The concept of software failure mode and effects analysis (FMEA) has grown in attractiveness over recent years as a way of assessing the reliability of software. Like its hardware counterpart, software FMEA is immensely tedious for an engineer to perform, as well as being error-prone. This paper presents the implementation of a novel method for automating code-level software FMEA based on treat...

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