Analysing unsaturated soil response often requires the soil-water-retention-curve (SWRC). The SWRC depends upon microstructure, which evolves with hydromechanical loading such as in-situ exposure to wetting-drying cycles. If is of interest and studied in laboratory, it essential specimens have a structure representative conditions. Simulating cycles laboratory possible albeit time-consuming fas...

Sand improvements using organic agents have shown promising results. Polyacrylamide is one possible organic agent, which has been shown to influence the shear strength, stiffness, soil remediation, and erosion resistance of geomaterials. In this study, we explored the shear wave velocity (S-wave) and water retention curves of unsaturated sands containing polyacrylamide solutions. The shear wave...

Maximizing product use is a central goal of many businesses, which makes retention and monetization two central analytics metrics in games. Player retention may refer to various duration variables quantifying product use: total playtime or session playtime are popular research targets, and active playtime is well-suited for subscription games. Such research often has the goal of increasing play...

This work presents point pedotransfer function (PTF) models of the soil water retention curve. The developed models allowed for estimation of the soil water content for the specified soil water potentials: -0.98, -3.10, -9.81, -31.02, -491.66, and -1554.78 kPa, based on the following soil characteristics: soil granulometric composition, total porosity, and bulk density. Support Vector Machines ...

Aim: Determine the feasibility of 18F-florbetaben positron emission tomography (PET) in diagnosing cardiac amyloidosis. Methods: 18F-florbetaben PET was performed in 14 subjects: 5 light chain (AL) amyloid, 5 transthyretin (ATTR) amyloid, and 4 control subjects with hypertensive heart disease. Qualitative and quantitative assessments of 18F-florbetaben activity were performed using mean standar...

To study PI effects in short-term memory for paired associates, 60 Ss were tested on 6 lists of 6 pairs each. The A-B pairs consisted of common English words paired at random. After each list had been presented once, Ss were tested for retention of 1 of the 6 pairs by presenting A as the cue for recall of B. Serial position of the critical pair was counterbalanced across stage of practice. Whil...

A Differential Evolution (DE) is introduced to predict the parameters of the soil water retention curve (SWRC) and it is configured for reliability and efficiency with the Unsaturated Soil Hydraulic Property Database (UNSODA). The main investigated dataset is 235 samples from lab_drying_h-t table and the testing shows that the data resource is reliable and steady. Some specific statistical comp...

The retention curve for knowledge acquired in a consumer behavior course is explored in a longitudinal study, tracking individual students from 8 to 101 weeks following course completion. Rasch measurement is used to link tests and to achieve intervally scaled measures of knowledge. The findings indicate that most of the knowledge gained in the course is lost within 2 years. Evidence is provide...

[1] Commonly, a soil’s relative permeability curve is predicted from its measured water retention curve by fitting equations that share parameters between the two curves (e.g., Brooks/Corey-Mualem and van Genuchten-Mualem). We present a new approach to predict relative permeability by direct application of measured soil water retention data without any fitting procedures. The new relative perme...