Exploratory Study on the Online Learning Understanding Based on Movement and Condition in Sitting Position

<p class="0abstract"><span lang="EN-US">This research study the relationship between the understanding of online learning during Movement Control Order (MCO) due to pandemic Covid-19 and the movement condition through the sensor’s parameters sensed by smartphone. The studies carried out to track the student’s movement and conditions in sitting position while online class conducted and collect the data recorded by using smartphone sensors. The Apps AndroSensor is used to measure the Light intensity (lux), Orientation (axis x, y and z), Sound Level (dB) and Heart Rate (bpm). The understanding of online learning is measured using survey and questionnaire. The respondents that involves on this research are consists from different universities. Multiple Linear Regression was used to conclude the relationship between the parameters and the understanding of online learning. Total 60 students were involved in this study. Students that are selected has followed the criteria needed which are height, weight and age. </span></p>

NGO Roles and Anticipated Outcomes in Environmental Participatory Processes: A Typology

Despite the plethora of research on environmental participatory processes, the forms of nongovernmental organization (NGO) involvement in these processes, and the influence of their involvement on participation outcomes, are still under-conceptualized. This article aims to develop a conceptual typology for NGO roles in environmental participatory processes and to suggest how these roles might be associated with participation outcomes. Following a review of public participation literature and NGO capacities, we present four prototypes of NGO roles along two axes: orientation axis and nature of involvement axis. The prototypes include Entrepreneur, Service-Provider, Enabler, and Partner. We then offer an empirical illustration of the typology using eight case studies across the globe and discuss how the four NGO roles might be associated with outcomes of participatory processes. The framework acknowledges the complex, sometimes limited, contribution of NGOs to participatory processes and suggests practical implications.

Начальная восприимчивость в системах магнитных эллипсоидальных наночастиц

In this work, we use molecular dynamics simulations to investigate the system of magnetic ellipsoidal nanoparticles with two different orientations of the dipole inside each particle. We consider dipoles directed along or perpendicular to the main axis of rotation. Such investigation allows us to determine the influence of the particles' anisotropy on the behavior and properties of the system. The initial susceptibility of the system was investigated and a cluster analysis was made. The obtained results revealed the influence of the orientation of the magnetic moment inside the particles of the same shape on the self-organization of the system, its microscopic and macroscopic properties. For the case of a parallel main orientation axis, the following was found: the initial susceptibility of particles whose shape is close to spherical increases faster and reaches higher values than in the case of ellipsoidal particles. The perpendicular orientation of the magnetic moment does not affect the initial susceptibility as significantly as in the previous case: increase in the magnetic moment leads to increase in the initial susceptibility, while the shape of the particle practically does not affect it.

The effects of direction and orientation of located objects on spatial language comprehension

abstractSpatial descriptions such as “The spider isbehindthe bee” inform the listener about the location of the spider (the located object) in relation to an object whose location is known (i.e., the bee, also called the reference object). If the geometric properties of the reference object have been shown to affect how people use and understand spatial language (Carlson & Van Deman, 2008; Carlson-Radvansky & Irwin, 1994), the geometric features carried by the located object have been deemed irrelevant for spatial language (Landau, 1996; Talmy, 1983). This view on the (ir)relevance of the located object has been recently questioned by works showing that presenting the located object in misalignment with the reference object has consequences for spatial language understanding (Burigo, Coventry, Cangelosi, & Lynott, 2016; Burigo & Sacchi, 2013). In the reported study we aimed to investigate which geometric properties of the located object affect the apprehension of a spatial description, and to disentangle whether the information concerning its orientation (axis), direction (front/rear), or a combination of the two gives rise to conflict. The outcomes of three placing tasks suggest that only the information concerning the direction of the located object is critical for spatial language use.

CRACK ANALYSIS IN ORTHOTROPIC MEDIA USING COMBINATION OF ISOGEOMETRIC ANALYSIS AND EXTENDED FINITE ELEMENT

The main contribution of this paper is to propose an IGA formulation to model stationary cracks within orthotropic media by combination of XFEM enrichment functions and level set functions. For modeling cracks in solution field crack face and crack tips are considered separately and the control points that are related to each part are enriched with different approaches. The control points related with the crack face are enriched using the Heaviside enrichment functions. Level set functions are used to distinguish the control points correspond to crack tips and crack face. Stress intensity factors are employed to compare the results of XIGA with other methods. Several numerical examples considering crack inclination angle and material orientation axis are solved to verify the XIGA formulation. The results fairly conform to available methods, however less DOFs are used in XIGA.

Preferred Orientation, PDF and Debye Equation

The effect of preferred orientation is currently neglected in the Debye Equation and PDF calculations. This is to a large extend justified, especially for the PDF, as the scattering by large sample volumes is detected by an area detector. The integration of powder rings reduces the effects of preferred orientation. As more laboratory PDF measurements become available that use linear position sensitive detectors or single counter detectors, preferred orientation needs to be reconsidered. A Rietveld calculation treats preferred orientation by multiplying the Bragg intensity by a factor that depends on the angle between the reciprocal space vector and the preferred orientation axis. The powder intensity I(Q) is thus multiplied by a complex function that depends at each Q on the degree of preferred orientation, the lattice parameters, reflection multiplicity etc. The effect on the PDF is therefore the convolution by the Fourier transform of this complex function. The Debye equation is derived from a spherical average of the scattering intensity of a finite object. Thus completely random orientation of the powder grains is implicitly assumed. Both, the Debye algorithm and the PDF algorithm calculate the powder pattern, respectively the PDF from a histogram of interatomic distances, which correspond to a spherical average of all interatomic distance vectors. This histogram does not allow for a Rietveld preferred orientation correction. The effects of preferred orientation on the PDF will be presented on the basis of simulated diffraction pattern. An algorithm to describe the changes in the PDF and the inverse sine Fourier transform as a convenient tool to calculate the powder diffraction pattern will be introduced. This is a good alternative to the Debye equation and allows to take preferred orientation into account both for the PDF and the calculated powder.

Influence of the Crystallographic Orientation of CuZn30 Single Crystal on the Portevin-Le Chatelier Effect

Plastic deformation of solid crystals is a complex process, mostly heterogeneous, due to the simultaneous effect of several deformation mechanisms. A dominating deformation mechanism depends on the properties of the material and external coefficients, viz. temperature, stress and strain rate. The applied Bridgman method permitted to obtain single crystal of the CuZn30 alloy adequate for plastic deformation investigations. Single crystal are characterized by selected crystallographic orientations from various areas of the basic triangle. In order to determine the influence of the crystallographic orientation on the Portevin-Le Chatelier effect selected single crystals were compressed at a temperature of 300°C at a strain rate of 10-3 s-1. Experiments confirmed the effect of the crystallographic orientation axis of CuZn30 single crystals on the observed differences in the intensity of stress oscillation on stress-strain curves.