Validity Study of a Jump Mat Compared to the Reference Standard Force Plate.
With these findings, new insights into axolotl gene expression profiling might be gained. When it comes to axolotl limb regeneration, a validated pair of reference genes is ODC and RPLP0. Moreover do we suggest GAPDH and RPLP0 as suitable for certain axolotl tissue analysis. Strikingly, ACTB was to be found most stable expressed in all comparative tissue groups, so we reason it to be suitable for all different kinds of axolotl tissue-type investigations. All 11 reference genes showed variable expression. This study characterizes the expressional patterns of 11 putative endogenous control genes during axolotl limb regeneration and in an axolotl tissue panel. In a search in the public database SalSite for genetic information of the axolotl we identified fourteen presumptive reference genes, eleven of which were further tested for their gene expression stability. Up till now, no reference targets have been described for the axolotl (Ambystoma mexicanum). Moreover have to be taken into concern the experimental conditions as they bias the regulation of reference genes. Guelke, Eileen Bucan, Vesna Liebsch, Christina Lazaridis, Andrea Radtke, Christine Vogt, Peter M Reimers, Kerstinįor the precise quantitative RT-PCR normalization a set of valid reference genes is obligatory. Identification of reference genes and validation for gene expression studies in diverse axolotl (Ambystoma mexicanum) tissues. This model combines correspondence and coherence with internal and external validation into a four-leaf model for references for the process of validating psychoanalytic theories. The authors conclude by sketching a heuristic model of validation. They recommend a critical attitude towards psychoanalytic theories, which, by carefully scrutinizing weak points and invalidating observations in the theories, reduces the risk of wishful thinking. Internal validation has to deal with the problems of subjectivity of observations and circularity of reasoning, external validation with the problem of relevance. The authors present arguments for both external and internal validation. Their core question in this paper is: can psychoanalytic theories be validated exclusively from within psychoanalytic theory (internal validation), or are references to sources of knowledge other than psychoanalysis also necessary (external validation)? They discuss aspects of the classic truth criteria correspondence and coherence, both from the point of view of contemporary psychoanalysis and of contemporary philosophy of science. The authors discuss criteria for the validation of psychoanalytic theories and develop a heuristic and normative model of the references needed for this. Zachrisson, Anders Zachrisson, Henrik Daae Validation of psychoanalytic theories: towards a conceptualization of references. The current study examined the predictive validity of the quality of letters of reference for forty-one student… While the predictive validity of these letters of reference has been called into question it has never been empirically studied. Letters of reference are widely used as an essential part of the hiring process of newly licensed teachers. The Predictive Validity of Teacher Candidate Letters of ReferenceĮRIC Educational Resources Information Center
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