نتایج جستجو برای: quality control test
تعداد نتایج: 2618411 فیلتر نتایج به سال:
When processing observational data, statistical testing is an essential instrument to hopefully render harmless incidental anomalies and disturbances in the measurements. A commonly used test statistic based on the general linear model is the generalized likelihood ratio test statistic. The standard formula given in the literature for this test statistic is not defined if the noise covariance m...
learning-oriented assessment seeks to emphasise that a fundamental purpose of assessment should be to promote learning. it mirrors formative assessment and assessment for learning processes. it can be defined as actions undertaken by teachers and / or students, which provide feedback for the improvement of teaching and learning. it also contrasts with equally important measurement-focused appro...
abstract the present study was conducted in order to investigate the impact of an integrated model of form-focused and task-based instruction on iranian efl learners vocabulary learning and retention.it also aimed to detect efl learners attitude towards the implementation of form-focused task-based vocabulary instruction in the classroom. in order to address the purposes of this study, a sampl...
this project was carried out in order to study of possibity of uses from 4 hexyresorcinol for prevention of melanosis in cultured shrimp.treatments including of samples processed with 0.15% concentration of 4 hexylresorcinol and control samples. the samples were kept at -18oc. bacterial, chemical and sensory examinations were carried out for a period of six months. statistically significant dif...
as a major consequence of medical interventions, quality of life (qol) is of great importance for patients suffering from refractory diseases, particularly cancer. the unbiased measurement of changes in qol is thus crucial in such cases. a prevalent bias related to qol research is the ‘response shift’ (rs) phenomenon. this review article aims to define rs and the challenges in measuring it. in ...
background: test anxiety is the cause of weakness of the immune system, reducing the academic efficacy, inhibitor of academic achievement and imposes high costs on society. locus of control is not only how to search information in environment but also is the way of analyzing it in relation to life events. this study is aimed to determine and compare test anxiety and locus of control in payame ...
nitrofurazone is one of the antibacterial nitrofuran agents used topically for skin infections. the drug is effective on the majority of infectious microorganisms. because of the importance of this drug in clinic, in this study various methods of synthesis of nitrofurazone were examined and the most appropriate method, applicable to pharmaceutical industry was chosen and optimized from the poin...
the study of air infiltration into the buildings is important from several perspectives that may be noted to energy and design of hvac systems, indoor air quality and thermal comfort and design of smoke control systems. given the importance of this issue, an experimental and numerical study of air infiltration through conventional doors and windows has been explored in iran. to this end, at fir...
this paper addresses the design of control charts for both variable ( x chart) andattribute (u and c charts) quality characteristics, when there is uncertainty about the processparameters or sample data. derived control charts are more flexible than the strict crisp case, dueto the ability of encompassing the effects of vagueness in form of the degree of expert’spresumption. we extend the use o...
Background and Aim: Musculoskeletal injuries are a major cause of disability in military personnel. Meanwhile, low back pain is one of the most common and high-risk problems among the military. Low back pain is more common in active-duty personnel and in military settings than in other populations. Therefore, the aim of this study was the survey of the effect of corrective exercises on posture ...
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