نتایج جستجو برای: principal factor analysis pfa
تعداد نتایج: 3538350 فیلتر نتایج به سال:
Phosphonoformate (PFA) is an effective antiviral agent that is used clinically in AIDS chemotherapy under the names of Foscarnet and Foscavir.1 Although the primary indication is AIDS-related human cytomegalovirus (HCMV) infection, PFA is also effective against HIV itself. PFA is proposed to act via inhibition of reverse transcriptase in HIV and DNA polymerase in herpes simplex virus (HSV) and ...
Risk-based asset allocation strategies are mainly used to diversify nominal asset weights. In this paper, we discuss the diversification of risk factors. The analysis is based on the idea of Partovi and Caputo (2004), who use principal component analysis to transform a portfolio into a set of uncorrelated principal portfolios. Risk-based asset allocation strategies can be applied to these uncor...
Diagnosis is the first analysis step for uncovering the root cause of failure for a defective chip. It is a fast and non-destructive approach to preliminarily identify and locate possible defects in a failing chip. Despite many advances in diagnosis techniques, it is often the case, however, that resolution, i.e., the number of locations or candidates reported by diagnosis, exceeds the number o...
In this presentation, the structural performance of fiber reinforced composite laminate Pi joints is studied through a progressive failure analysis (PFA) method. The bonded joint area that is the weakest link of the Pi joint structure is modeled using the discrete cohesive zone method (DCZM). The damage growth and failure of the bonded interface is modeled through an exponential decaying tracti...
The present study aimed to examine the training effects of a didactic and simulation-based psychological first aid (PFA) program. Based on the competency-based model, the study sought to examine whether the PFA training would enhance knowledge, skills, and attitudes. Study 1 examined the training effects of the PFA program in a sample of undergraduate and graduate students in psychology. Study ...
The dependence between software attributes is studied, using the projects written by second year students as a requirement in their curriculum. The dendrogram, factorial analysis and principal components methods are used as Data Analysis Technique. Also, some consequences on the education activity are considered.
BACKGROUND The lack of association found in several cohort studies between dietary saturated fat and coronary heart disease (CHD) risk has renewed debate over the link between dietary fats and CHD. METHODS AND FINDINGS We assessed the relationship between plasma phospholipid fatty acid (PFA) concentration and incident CHD using a nested case control design within a prospective study (EPIC-Nor...
Electronic voting, or e-voting, is a relatively closed process that contains inherent risks associated with the potential for voting irregularities, translation errors, and inappropriate manipulation (Oravec, 2005). To develop a greater understanding of trust issues surrounding the use of e-voting, an investigation into the public trust and the relationship between trust and electronic voting t...
In many modern manufacturing processes, large quantities of multivariate process-measuremen t data are available through automated in-process sensing. This article presents a statistical technique for extracting and interpreting information from the data for the purpose of diagnosing root causes of process variability. The method is related to principal components analysis and factor analysis b...
Glyoxal as an alternative fixative to formaldehyde in immunostaining and super‐resolution microscopy
Paraformaldehyde (PFA) is the most commonly used fixative for immunostaining of cells, but has been associated with various problems, ranging from loss of antigenicity to changes in morphology during fixation. We show here that the small dialdehyde glyoxal can successfully replace PFA Despite being less toxic than PFA, and, as most aldehydes, likely usable as a fixative, glyoxal has not yet bee...
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