negation has many complicated forms and can be represented in a variety of ways. some sentences have explicit negation items and some other sentences convey the notion of negation without having any explicit negation item. negative polarity items (npis) are expressions that need to a negative context to be grammatically correct, and their meanings are compatible with negative sentences and are ...

Allan variance method is a useful tool for analyzing the random errors, but the confidence on the estimate would be lower when the data length became shorter, therefore the modified Allan variance is deduced to analysis the random errors of MEMS inertial sensors (MINS). The definition and limitation of Allan variance are presented first, and then the modified Allan variance is deduced. Allan va...

Background: The choices of experimental design as well as of statistical analysis are of huge importance in field experiments. These are necessary to be correctly in order to obtain the best possible precision of the results. The random arrangements, randomized blocks and Latin square designs were reviewed and analyzed from the statistical perspective of error analysis. Material and Method: Ran...

Background: In the treatment and health process, there are a lot of dangers to patients, and the increased number of medical errors is one of the most important circumstances of this process. Objective: The present research purposed to decrease medical errors through disclosure of them in hospitals of Tehran University of Medical Sciences. M...

The present study is aimed at determination of accuracy of relocation of Gill-Thomas-Cosman frame during fractionated stereotactic radiotherapy. The study aims to quantitatively determine the magnitudes of error in anteroposterior, mediolateral and craniocaudal directions, and determine the margin between clinical target volume to planning target volume based on systematic and random errors. Da...

Different error detection methods yield different error proportions and have variable benefits for surgical pathology divisions with limited resources. We performed a nonconcurrent cohort study at a large institution that practices subspecialty surgical pathology sign-out to compare the effectiveness and usefulness of error detection using a targeted 5% random review process and a focused revie...

Modeling and analysis of soft errors in electronic circuits has traditionally been done using computer simulations. Computer simulations cannot guarantee correctness of analysis because they utilize approximate real number representations and pseudo random numbers in the analysis and thus are not well suited for analyzing safety-critical applications. In this paper, we present a higher-order lo...

Introduction: Radiation therapy involves a multistep procedure; therefore, the error in patient set up is an inherent part of the treatment. Main purpose of this study was to determine the clinical target volume (CTV) to planning target volume (PTV) in head and neck cancer patients. Material and Methods: A total of 15 patients who had daily p...