2,113 research outputs found
Mechanisms For Implementing Assessments in The Independent Curriculum: Analytical Study In Educational Institutions
The Merdeka Curriculum is an innovative concept in the world of education in Indonesia that aims to provide flexibility and freedom to teachers in designing more creative and innovative learning methods and materials. One of these things is the assessment process. Assessment in the Merdeka Curriculum refers to the evaluation process carried out to measure students' abilities and skills effectively, objectively, and accurately. Assessment aims to provide an overview of the extent to which students have achieved the competencies set out in the curriculum. In addition, assessment also provides feedback to students and teachers regarding student learning progress and assists in identifying weaknesses and strengths in teaching and learning. In its implementation, assessment or judgment plays an important role in the success of this successful program. The Merdeka Curriculum assessment itself is a series of activities carried out to determine the level of students' abilities in a lesson in the Merdeka Curriculum. The government has regulated learning and assessment in the Merdeka Curriculum in full and in detail. It is hoped that this regulated learning and assessment can serve as a reference for teachers in planning and implementing meaningful learning so that it can create more creative, critical thinking, and innovative students
Attraction Between Like-Charge Surfaces in Polar Mixtures
We examine the force between two charged surfaces immersed in aqueous
mixtures having a coexistence curve. For a homogeneous water-poor phase, as the
distance between the surfaces is decreased, a water-rich phase condenses at a
distance in the range 1-100nm. At this distance the osmotic pressure can
become negative leading to a long-range attraction between the surfaces. The
osmotic pressure vanishes at a distance , representing a very deep
metastable or globally stable energetic state. We give analytical and numerical
results for and on the Poisson-Boltzmann level.Comment: 6 pages, 6 figure
Solvo-osmotic flow in electrolytic mixtures
We show that an electric field parallel to an electrically neutral surface
can generate flow of electrolytic mixtures in small channels. We term this
solvo-osmotic flow, since the flow is induced by the asymmetric preferential
solvation of ions at the liquid-solid interface. The generated flow is
comparable in magnitude to the ubiquitous electro-osmotic flow at charged
surfaces, but for a fixed surface charge density, it differs qualitatively in
its dependence on ionic strength. Solvo-osmotic flow can also be sensitively
controlled with temperature. We derive a modified Helmholtz-Smoluchowski
equation that accounts for these effects.Comment: 11 pages, 4 figure
Self-propulsion mechanism of active Janus particles in near-critical binary mixtures
Gold-capped Janus particles immersed in a near-critical binary mixture can be
propelled using illumination. We employ a non-isothermal diffuse interface
approach to investigate the self-propulsion mechanism of a single colloid. We
attribute the motion to body forces at the edges of a micronsized droplet that
nucleates around the particle. Thus, the often-used concept of a surface
velocity cannot account for the self-propulsion. The particle's swimming
velocity is related to the droplet shape and size, which is determined by a
so-called critical isotherm. Two distinct swimming regimes exist, depending on
whether the droplet partially or completely covers the particle. Interestingly,
the dependence of the swimming velocity on temperature is non-monotonic in both
regimes.Comment: 5 pages, 3 figure
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