A conceptual framework for the design of a 3D courseware on electromagnetic theory

This paper will explain about research on development of three dimensional (3D) courseware for Electromagnetic Theory Subject (EMT) subject that have been offers to all Malaysia Technical University Network (MTUN). The EMT courseware was included a multimedia software, three dimensional environment, and exercises for student to be done to test their understanding after using the courseware. Moreover, this paper explain about the research methodology that include the development of the courseware for teaching and learning, the effectiveness of the 3D courseware for teaching and learning, and the use of ICT in education for universities level. In this research it is use of Constructivism-Cognitive-Contextual Model Life Cycle (C3MLC) model to construct the research, which it includes of Analysis phase, Design phase, Development phase, Implementation phase, Evaluation phase. After the first three phases have been completely done, courseware will be test to Subject Matter Expert (SME) to judge the validity of the courseware for the learning usage. It includes past students and lecturers before the Evaluation phase be done to collect research sample, instrument, and methodology of collecting and analyzing data gathered

Design and Implementation of 3D approach for Courseware Electromagnetic Theory Subject

Abstract— This paper will explain about research on development of three dimensional (3D) courseware for Electromagnetic Theory Subject (EMT) subject that have been offers to all Malaysia Technical University Network (MTUN). The EMT courseware was included a multimedia software, three dimensional environment, and exercises for student to be done to test their understanding after using the courseware. Moreover, this paper explain about the research methodology that include the development of the courseware for teaching and learning, the effectiveness of the 3D courseware for teaching and learning, and the use of ICT in education for universities level. In this research it is use of Constructivism-Cognitive-Contextual Model Life Cycle (C3MLC) model to construct the research, which it includes of Analysis phase, Design phase, Development phase, Implementation phase, Evaluation phase. After the first three phases have been completely done, courseware will be test to Subject Matter Expert (SME) to judge the reliability of the courseware for the learning usage. It includes past students and lecturers before the Evaluation phase be done to collect research sample, instrument, and methodology of collecting and analyzing data gathered

Thermal Characterization of Polycrystalline CVD Diamond Thin Films

An experimental thermal characterization method is developed for high thermal conductivity thin films. The method utilizes Ta/Pt resistors on microfabricated free-standing thin film structures both for heating and temperature monitoring at different positions on the structures. The steady-state temperature at the heater and the sensor positions are monitored as a function of the power dissipated by the heater under vacuum environment, and the thermal conductivity is estimated by comparing these results to FEA and/or analytical models. The developed method is used to characterize the thermal conductivity of various different CVD diamond films of different grain sizes and films thicknesses. The measured thermal conductivity values range from 15 W/m·K to 300 W/m·K, which are at least one order of magnitude lower than that of natural diamond. It is also shown that the thermal conductivity of such films in the in-plane direction increases with increasing grain size and film

Deconstructing the galaxy stellar mass function with UKIDSS and CANDELS: the impact of colour, structure and environment

We combine photometry from the Ultra Deep Survey (UDS), Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey (CANDELS) UDS and CANDELS the Great Observatories Origins Deep Survey-South (GOODS-S) surveys to construct the galaxy stellar mass function probing both the low- and high-mass end accurately in the redshift range 0.326.0), affording us robust measures of structural parameters. We construct stellar mass functions for the entire sample as parametrized by the Schechter function, and find that there is a decline in the values of ϕ and of α with higher redshifts, and a nearly constant M* up to z∼3. We divide the galaxy stellar mass function by colour, structure, and environment and explore the links between environmental overdensity, morphology, and the quenching of star formation. We find that a double Schechter function describes galaxies with high Sérsic index (n>2.5), similar to galaxies which are red or passive. The low-mass end of the n>2.5 stellar mass function is dominated by blue galaxies, whereas the high-mass end is dominated by red galaxies. This shows that there is a possible link between morphological evolution and star formation quenching in high mass galaxies, which is not seen in lower mass systems. This in turn suggests that there are strong mass-dependent quenching mechanisms. In addition, we find that the number density of high-mass systems is elevated in dense environments, suggesting that an environmental process is building up massive galaxies quicker in over densities than in lower densitie

Espacialização e diagnóstico da situação atual e das causas de degradação em diferentes sistemas de uso da terra em áreas desmatadas da Amazônia.

Apresenta estudos que venham contribuir para a determinação de parâmetros para o conhecimento real desses níveis de degradação, e pesquisas que unam três escalas (satélite-campo-videografia ou aerofotos) que possibilitem definir os vários tipos de “áreas degradadas” em escala compatível que se possa identificar o nível de degradação

Deconstructing the Galaxy Stellar Mass Function with UKIDSS and CANDELS: the Impact of Colour, Structure and Environment

We combine photometry from the UDS, and CANDELS UDS and CANDELS GOODS-S surveys to construct the galaxy stellar mass function probing both the low and high mass end accurately in the redshift range 0.3<z<3. The advantages of using a homogeneous concatenation of these datasets include meaningful measures of environment in the UDS, due to its large area (0.88 deg^2), and the high resolution deep imaging in CANDELS (H_160 > 26.0), affording us robust measures of structural parameters. We construct stellar mass functions for the entire sample as parameterised by the Schechter function, and find that there is a decline in the values of phi and of alpha with higher redshifts, and a nearly constant M* up to z~3. We divide the galaxy stellar mass function by colour, structure, and environment and explore the links between environmental over-density, morphology, and the quenching of star formation. We find that a double Schechter function describes galaxies with high Sersic index (n>2.5), similar to galaxies which are red or passive. The low-mass end of the n>2.5 stellar mass function is dominated by blue galaxies, whereas the high-mass end is dominated by red galaxies. This hints that possible links between morphological evolution and star formation quenching are only present in high-mass galaxies. This is turn suggests that there are strong mass dependent quenching mechanisms. In addition, we find that the number density of high mass systems is elevated in dense environments, suggesting that an environmental process is building up massive galaxies quicker in over densities than in lower densities.Comment: 26 pages, 14 figures, Accepted for publication in MNRA

Herschel-ATLAS: modelling the first strong gravitational lenses

We have determined the mass density radial profiles of the first five strong gravitational lens systems discovered by the Herschel Astrophysical Terahertz Large Area Survey. We present an enhancement of the semilinear lens inversion method of Warren & Dye which allows simultaneous reconstruction of several different wavebands and apply this to dual-band imaging of the lenses acquired with the Hubble Space Telescope. The five systems analysed here have lens redshifts which span a range 0.22 ≤ z ≤ 0.94. Our findings are consistent with other studies by concluding that: (1) the logarithmic slope of the total mass density profile steepens with decreasing redshift; (2) the slope is positively correlated with the average total projected mass density of the lens contained within half the effective radius and negatively correlated with the effective radius; (3) the fraction of dark matter contained within half the effective radius increases with increasing effective radius and increases with redshift