Quadrature Phase Shift Keying (QPSK) Modulator Design using Multi-Port Network in Multilayer Microstrip-Slot Technology for Wireless Communication Applications

The design of the quadrature phase shift keying (QPSK) modulator by using a multi-port network is proposed in this article for the use in wireless communication applications. The multi-port network is in the form of multilayer microstrip-slot technology. This multi-port network is composed of three 3-dB rectangular-shaped directional couplers with virtual stubs and an equal power division divider with in-phase characteristic. The design is performed by applying a full-wave electromagnetic simulation software, CST Microwave Studio (CST MWS). Keysight’s Advanced Design System (ADS) is applied in analyzing and evaluating the QPSK constellation of the proposed modulator. This comparatively small size of proposed design has been fabricated, and its wideband performance of 2 to 6 GHz is verified

Leakage Detection In Pipeline Using Wavelength

Nowadays natural gas transport and distribution is a complex and currently growing and increasing. Natural gas produced from well need to transport in a great distance before reaching it point of use. The pipeline is designed to quickly and efficiently transport the gas from its origin to the high demand area. Either pipelines transportation for water supply or natural gas, leakage is unacceptable problem. Small leak along the pipeline is hard to detect. The objective of this study is to build the test rig galvanized iron and MDPE pipelines. Besides that, the main objective is to determine the leak detection in gas pipeline using wavelet-based filtering. . Main point of each journal is compared in order to determine the problems arise from the previous research. It is then follow by the methodology which will discuss further in this chapter. From methodology, it is known that the data taken can be analysing through Daisy Lab and Math lab software  Wavelet and cross correlation is used to analyse the signal in Matlab. From the result, it show that the leak can be identified based on the peak of amplitude of the signal. The result for galvanized iron pipe is not acceptable due to short pipeline length. Thus it can be concluded that leak can be determined using wavelet-based filtering. As the conclusions, the propose technique can be used to determine the leak in pipeline

Magnetic ordering in GaAlAs:Mn double well structure

The magnetic order in the diluted magnetic semiconductor barrier of double AlAs/GaAs: Mn quantum well structures is investigated by Monte Carlo simulations. A confinement adapted RKKY mechanism is implemented for indirect exchange between Mn ions mediated by holes. It is shown that, depending on the barrier width and the hole concentration a ferromagnetic or a spin-glass order can be established.Comment: 3 figure

Teologi Kerukunan Beragama Dalam Islam (Studi Kasus Kerukunan Beragama Di Indonesia)

Religious affiliation and cultural diversity has become potential sources of social conflicts in Indonesia. As almost every existing religion has a truth claim, all of it's believers fell obliged to proclaim religious teachings and values in social and national life. Viewed in this context , the biggest problem in Indonesia today is “ how theology of existing religions define themselves among other religions . This article is aimed at exploring the concept of “Tasamuh / the principle of tolerance” as one of the theological basis of the religious consciousness in Islam. The concept of tolerance in Islam is so simple and rational. Islam requires its followers to establish strict limits in the context of faith, while maintaining respect for other's rights, individually, socially and religiously. Such an obligation is made to keep its followers not to get stuck on syncretism

The Concept of Tolerance in Islamic Education

This article aims to discuss comprehensively the concept of tolerance in Islam later thought in such a way that the concept can be applied operationally in Islamic educational institutions such as madrassas, Islamic boarding schools and colleges. Methods and approaches used to address this issue are philosophical (phenomenological) and the sociology of education, one of which is the theory of inclusivism Mircea Eliade. In Islam, different thoughts, tribes, and even religion (adherents) refer to fitrah and sunnatullāh of God‟s will. For this reason, then, tasāmuh (tolerance) becomes an important doctrine in every religion treatise, including in Islamic education system i.e; 1) to have responsive toward modernization which has been existed in general school institutions under Ministry of Education; 2) to develop sensitive character toward the change through apporiate learning strtategy and developing children psycho-social condition, modernizing learning facilities, environment, and other supporting factors including the involevement of parents, government, society and other education stakeholder; 3) to implement a model to strengthen inclusive Islamic education system which is opened, dialogic, and student-centered; 4) to bear a strong and tough human reseource with high tolerance who will act to occupy and create new civilization emphasizing on religion, spritual and humanism values; 5) to develop networking and corporation both national and International to expand informationn access, funding, and other International supports

I-UNIT SEBAGAI ALAI UKUR KEMAMPUAN MENGARANG BAHASA INDONESIA

This study is an attempt to look for a valid and reliable composition- measuring instrument. It is an early effort to employ a so-called T-unit, or a terminable unit, to measure students' composition competence. The study involved elementary school students in Years IV, V, and VI. The instrument was made by breaking down students' composition into smaller parts in the form of meaningful sentences. Consequently, the better the composition was, the smaller the number of the T-units was, but the longer they were. The z-score was used to assess the reliability, and the difference among the groups was calculated by the one-way analysis of variance. The findings show that the T-unit can objectively differentiate elementary school students of Years IV, V, and VI in terms of their composition competence. In other words, the T-unit can be used as an objective and reliable composition- measuring instrument

On the nature of the spin-polarized hole states in a quasi-two-dimensional GaMnAs ferromagnetic layer

A self-consistent calculation of the density of states and the spectral density function is performed in a two-dimensional spin-polarized hole system based on a multiple-scattering approximation. Using parameters corresponding to GaMnAs thin layers, a wide range of Mn concentrations and hole densities have been explored to understand the nature, localized or extended, of the spin-polarized holes at the Fermi level for several values of the average magnetization of the Mn ystem. We show that, for a certain interval of Mn and hole densities, an increase on the magnetic order of the Mn ions come together with a change of the nature of the states at the Fermi level. This fact provides a delocalization of spin-polarized extended states anti-aligned to the average Mn magnetization, and a higher spin-polarization of the hole gas. These results are consistent with the occurrence of ferromagnetism with relatively high transition temperatures observed in some thin film samples and multilayered structures of this material.Comment: 3 page