A Review on Carbon Fiber Reinforced Polymer as Wrapping Structures For Pipeline

To maintain the continuous product flow in the pipe, the durability of the pipe structure is achieved through pipe insulation. The composite material will be used as the main material, since it may have the combined characteristics of the constituents or have substantially different properties than the individual constituents. Replacing the damaged pipe with a new one will not only consume high cost but also will create a complication for product flow. As to alleviate such situations this research focusses on using the carbon fiber as the wrapping material. To identify the suitable design and optimization of laminated carbon fiber on piping systems, the defect, leakage and imperfection on pipe should be identified. The effect of different laminate optimization through Classical Laminate Theory CLT and experimental data too need to be considered as it changes the mechanical properties of the composite material. The microstructure of the composite too will be validated as an extra reference for the theoretical and experimental data on its effect in the microstructure after the loadin

A Review on Carbon Fiber Reinforced Polymer as Wrapping Structures For Pipeline

To maintain the continuous product flow in the pipe, the durability of the pipe structure is achieved through pipe insulation. The composite material will be used as the main material, since it may have the combined characteristics of the constituents or have substantially different properties than the individual constituents. Replacing the damaged pipe with a new one will not only consume high cost but also will create a complication for product flow. As to alleviate such situations this research focusses on using the carbon fiber as the wrapping material. To identify the suitable design and optimization of laminated carbon fiber on piping systems, the defect, leakage and imperfection on pipe should be identified. The effect of different laminate optimization through Classical Laminate Theory CLT and experimental data too need to be considered as it changes the mechanical properties of the composite material. The microstructure of the composite too will be validated as an extra reference for the theoretical and experimental data on its effect in the microstructure after the loadin

Determining the factors that promote higher order thinking skills in mathematics technology enhanced learning environment: perspective from university students

The purpose of this study was to investigate the factors that influence promotion of higher order thinking skills (HOTS) among mathematics higher learning institution students in technology enhanced learning environment (TEL) in Malaysia. The study used descriptive research design. Data of the study was collected by using quantitative research approach. A total of 250 students from three public universities participated in the study. The study explores the relationship between students' attitude towards technology use and organisation support towards promotion of HOTS in mathematics TEL environment. Results from structural equation modelling reported that students' attitude towards technology use had a positive direct relationship with HOTS. Meanwhile, organisation support had a positive direct relationship with students' attitude towards technology use which in turn indirectly influence promotion of HOTS. The hypothesized structural equation model accounted for 20.2% of the variance in HOTS. The results indicated a need for further studies in order to examine factors that predict promotion of HOTS in mathematics TEL at higher learning institutions in Malaysia

Quantum control of 88^{88}Sr+^+ in a miniature linear Paul trap

We report on the construction and characterization of an apparatus for quantum information experiments using $^{88}$Sr$^+$ ions. A miniature linear radio-frequency (rf) Paul trap was designed and built. Trap frequencies above 1 MHz in all directions are obtained with 50 V on the trap end-caps and less than 1 W of rf power. We encode a quantum bit (qubit) in the two spin states of the $S_{1/2}$ electronic ground-state of the ion. We constructed all the necessary laser sources for laser cooling and full coherent manipulation of the ions' external and internal states. Oscillating magnetic fields are used for coherent spin rotations. High-fidelity readout as well as a coherence time of 2.5 ms are demonstrated. Following resolved sideband cooling the average axial vibrational quanta of a single trapped ion is $\bar n=0.05$ and a heating rate of $\dot{\bar n}=0.016$ ms$^{-1}$ is measured.Comment: 8 pages,9 figure

Microfabricated Ion Traps

Ion traps offer the opportunity to study fundamental quantum systems with high level of accuracy highly decoupled from the environment. Individual atomic ions can be controlled and manipulated with electric fields, cooled to the ground state of motion with laser cooling and coherently manipulated using optical and microwave radiation. Microfabricated ion traps hold the advantage of allowing for smaller trap dimensions and better scalability towards large ion trap arrays also making them a vital ingredient for next generation quantum technologies. Here we provide an introduction into the principles and operation of microfabricated ion traps. We show an overview of material and electrical considerations which are vital for the design of such trap structures. We provide guidance in how to choose the appropriate fabrication design, consider different methods for the fabrication of microfabricated ion traps and discuss previously realized structures. We also discuss the phenomenon of anomalous heating of ions within ion traps, which becomes an important factor in the miniaturization of ion traps

Threshold effect of foreign direct investment on environmental degradation

The aim of this paper is to investigate the threshold effect of foreign direct investment (FDI) on environmental degradation. In empirical analysis, FDI and environmental degradation are jointly determined under the given threshold variable and other exogenous variables. Using carbon dioxide (CO2) emissions per capita as a proxy for environmental degradation, the results show that increasing FDI worsens CO2 emissions after a threshold level of corruption has been reached. Our results demonstrate that increasing FDI will increase CO2 emissions when the degree of corruptibility is relatively high. The study suggests that further FDI and improved environmental quality are competing rather than compatible objectives in high-corruption countries and are compatible rather than competing objectives in low-corruption countries. Higher trade liberalization in low-corruption countries could contribute to negative environmental consequences because of the increased output or economic activity which results from increased trade. The robustness estimation confirms the evidence that pollution and economic development increase together up to a certain income level, after which the trend reverses.info:eu-repo/semantics/publishedVersio

Impak Penggunaan Aplikasi Atas Talian Terhadap Motivasi Guru Sekolah Rendah Semasa Pendamik Covid-19: the Impact of Online Application on Primary School Teachers Motivation During Covid-19 Pandemic

Negara Malaysia menimpa kemelut Covid-19 yang menyedihkan sejak pertengahan 2020. Dalam bidang pendidikan, aktiviti pendidikan secara semuka yang melibatkan semua institusi pendidikan terjejas dan kerajaan Malaysia memperkenalkan aktiviti pembelajaran dan pemudahcaraan dari rumah (PdPR) secara atas talian, perlu dilaksanakan semasa pelaksanaan Perintah Kawalan Pergerakan (PKP) yang berlangsung. Kaedah PdPR secara dalam talian, mungkin dilihat sebagai cara mudah untuk memastikan proses pembelajaran dan pemudahcaraan (PdPc) dapat diteruskan supaya mampu memastikan pelajar tidak ketinggalan dalam pelajaran. pelajar. Penggunaan aplikasi-aplikasi seperti Quizzies, Kahoot, live worksheets, blooket dan sebagainya meningkatkan tahap motivasi kerja guru untuk menjalankan PdPc dengan menarik serta cemerlang. Suasana pembelajaran berubah bukan hanya ‘chalk and talk' sahaja, tetapi lebih kepada menjadikan pembelajaran yang kreatif dan inovatif. Pengetahuan teknologi pedagogi kandungan (PTPK) membolehkan para guru untuk mengintegrasikan teknologi dalam pengajaran mereka. Guru perlu mengajar kandungan dengan menggunakan kaedah pedagogi dan teknologi yang sesuai. Guru-guru wajar menggunakan aplikasi atas talian sebagai strategi latihan dalam PdPc supaya dapat menambahkan penguasaan dan pencapaian akademik mereka. Selain itu, kajian ini dapat mewujudkan suasana PdPc guru yang seronok

Migrating to technology integrated classes to promote higher order thinking skills among university students: perspectives from mathematics academicians

This study investigates factors that influence the use of information and communication technology (ICT) tools by academicians to promote higher order thinking skills (HOTS) among university mathematics students. The study adapted constructs such as performance expectancy, effort expectancy and facilitating conditions from the Unified Theory of Acceptance and Use of Technology. The study applied descriptive research design and used quantitative and qualitative approach in the form of questionnaire and interview to gather data from 86 academicians from three local public universities in Malaysia. The data were analysed in terms of descriptive analysis and content analysis. The result showed that the technology, instructor, student, learning material, task and organisational factors play important roles in promoting HOTS among students. The study contributed to expanding readers' understanding of the factors that influence the use of ICT tools by academicians to promote HOTS among university students