2. Analysis. A local frame is constructed for each point pi ∈ P based on local (C(pi)) estimation of normal, principal curvatures (λmin, λmax), and principal curvature directions. 3. Sample pruning. A sample for which λmin = λmax is invariant under rotations around its normal, thus a point pair containing such a sample can not define a unique transformation. We reject this kind of samples by us...

This study aims to determine the effect of Current Ratio and Total Asset Turnover on Gross Profit Margin during COVID-19 pandemic. The variables used in this research are Ratio, Margin. was conducted hotels, restaurants tourism sub-sector companies listed IDX April 2020-September 2021. method is quantitative, with an associative approach, measurement scale ratio scale. sampling technique purpos...

The widespread use of Pearson correlations and, by extension, the Maximum Likelihood estimation method, does not take into account the measurement properties of Likert scales observed variables when carrying out a construct validity process through Confirmatory Factor Analysis (CFA). This simulation study compares four estimation methods (Maximum Likelihood –ML-, Robust Maximum Likelihood –RML-...

We show how and why it makes sense to use a relational formalisation instead of the usual functional one in the treatment of term graphs. Special attention is paid to term graphs with bound variables, that have, to our knowledge, never been formalised with such a generality before. Besides the novel treatment of term graphs themselves, we present an innovative relational homomorphism concept th...

Vinasse that has high COD and total solid content is bottom of distillation from unit of bioethanol production Vinasse treatment using anaerobic digestion produced biogas. This research used anaerobic digester-laboratory scale at room temperature and batch system. The purpose of this research was investigation the effect of total solid content to biogas production rate from vinasse, pH profil a...

IMPORTANCE Optimizing assessments of rate of progression in Parkinson disease (PD) is important in designing clinical trials, especially of potential disease-modifying agents. OBJECTIVE To examine the value of measures of impairment, disability, and quality of life in assessing progression in early PD. DESIGN, SETTING, AND PARTICIPANTS Inception cohort analysis of data from 413 patients wit...

background: selecting the correct statistical test and data mining method depends highly on the measurement scale of data, type of variables, and purpose of the analysis. different measurement scales are studied in details and statistical comparison, modeling, and data mining methods are studied based upon using several medical examples. we have presented two ordinal–variables clustering exampl...

this research aimed to study of the effects of classroom goal structures on students’ psychological wellbeing with respect to the mediating role of self-efficacy and basic psychological needs. in this regard, the effects of performance and mastery goal structure as exogenous variables with self-efficacy and basic psychological needs as mediating variables on wellbeing were tested through a hypo...