15 research outputs found

    Using Fixed Column Primer for Computation of Boolean Matrix Multiplication with DNA

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    In our previous work, we implemented an in vitro implementation of Boolean matrix multiplication with DNA computing. However, with the increase in the problem size, the material consumption of DNA and the number of experimental steps required to compute the problem increases drastically. Thus in this paper, we introduce fixed column primer method to reduce the material consumption and the labour intensiveness of the computation

    Markov Chain Modeling for Router Hotspots on Network-On-Chip

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    A Network-on-Chip (NoC) is a current paradigm in complicated System-on-Chip (SoC) designs that renders compe- tent on-chip communication architecture. It proposes scalable communication to SoC and grants decoupling of communi- cation and computation. In NoC, design space exploration is vital merited to trade-offs among latency, area, and power consumption. Therefore, analytic modeling is crucial step for early NoC design. This paper delivers a top-down approach router model, and employs this model for mesh NoC performance analysis quantified in terms of throughput, average of queue size, efficiency, loss and waiting time. As a case study, the advised model is applied to map a MPEG4 video core to a 4 × 4 mesh NoC with deterministic routing to evaluate the overall NoC quality of service (QoS). The model is utilized as well to acquaints how much occupancy of average queue size for each router that reduces resources (hardware) area and cost. The accuracy of our approach and its practical use is illustrated through extensive simulation results

    A Systematic Review on Promising Development of Palm Oil and its Nanofluid as a Biodegradable Oil Insulation Alternative

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    This review is conducted following a systematic approach by adopting Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline and using reliable and trustworthy databases, namely IEEE Xplore, Science Direct, and Scopus, with Google Scholar as an additional database. This review paper has divided into three subsections. The first subsection shows the major publications searching for palm oil-based as an alternative to biodegradable oil insulation. The second subsection discusses the research trends on palm oil replacing mineral oil. Finally, the third subsection discusses the development and progress of palm oil-based nanofluid as a future substitute for biodegradable oil insulation, as well as the types of analyzes conducted in the studies. This part contains eleven sub-subsections, namely (i) types of palm oil used, (ii) tests of palm oil as insulating liquid, (iii) properties of palm oil as insulating liquid, (iv) thermal aging, (v) water content, (vi) dissolved gas analysis (vii) selection of nanoparticles, (viii) preparation of palm oil-based nanofluids, (ix) characterization and stability of palm oil-based nanofluids, (x) analysis of electrical, physical and chemical properties, and (xi) current status of palm oil-based insulating liquid in Malaysia. This article highlights palm oil’s development, trends, and status and its nanofluid as a liquid insulating alternative in transformers. The properties and performance of the liquid are also reported in this article. The promising results, shortcomings, and imbalances between palm oil and other types of natural ester oils are discussed, and suggestions are made for future work worth exploring

    Thermal Aging Effects on the Electrical Breakdown Voltage of TiO2 and MWCNT Nanofluids Based on POME

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    In this work, the aging behavior of liquid insulation in transformers using chemically modified refined, bleached, and deodorized palm oil (RBDPO) olein is investigated. The transesterification process is used to modify RBDPO olein to produce palm oil methyl ester (POME), which is used as a base fluid for nanofluid (NF) preparation. The performance of POME with the dispersion of semiconducting titanium oxide (TiO2) and conducting multi-walled carbon nanotube (MWCNT) nanoparticles (NPs) at different concentrations on the AC breakdown voltage (AC BDV) as insulation in transformers is evaluated for their aging behavior. The accelerated aging was conducted under sealed conditions at a temperature of 130°C for 1000 hours. The results show that incorporating TiO 2 and MWCNT NPs into POME did not have an adverse effect on the BDV, regardless of the doping concentrations. Notably, POME-based TiO2 NFs exhibited the highest AC BDV after thermal aging, specifically at a concentration of 0.05 g/L. Anderson-Darling goodness-of-fit statistics were performed on the experimental data to verify their agreement with the Normal and Weibull distributions

    Accreditation Handbook

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    This handbook is a reference for the faculty, academic and administrative staff on the process and procedure involved in preparing and obtaining accreditation. This handbook also serves as a valuable guide for the faculty to develop an assessment plan in the process of the future accreditation

    Accreditation Handbook

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    This handbook is a reference for the faculty, academic and administrative staff on the process and procedures involved in preparing and obtaining accreditation. This handbook also serves as a valuable guide for the faculty to develop an assessment plan in the process of future accreditation

    Stability of Chlorine Termination on Ge(100) and Ge(111) Surfaces

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    The different cleaning solution; HCl and HF solution are used to remove the suboxide and oxide component on Ge surface. The HCl cleaning results chlorine (Cl) termination on Ge surface whereas no Fluorine (F) termination was observed just after HF cleaning. The growth of Ge oxide is studied after treated with HCl cleaning on two surface orientations; (100) and (111), respectively in dry oxygen ambient and cleanroom air by spectroscopic ellipsometry (SE) and x-ray photoelectron spectroscopy (XPS). A clear step and terrace trend was observed for the oxidation growth of Ge (100) and Ge (111) in dry oxygen ambient compared to in clean room air. This trend shows the difference in surface reaction of Ge oxidation as humidity varies. The stability of chlorine termination of Ge (111) than Ge (100) explains the slower growth of oxidation in dry oxygen ambient

    ADAPTIVE ENERGY MANAGEMENT STRATEGY FOR SUSTAINABLE OPERATION OF HYBRID ELECTRIC VEHICLE

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    Hybrid electric vehicles (HEVs) in the transportation sector is spearheading the industry towards embracing green technology to ensure the sustainability of the environment. HEVs offer significant reduction of exhaust emissions while retaining vehicle performance achieved via a revolutionary energy management strategy (EMS) which reforms the management of power flow from the dual energy sources of a HEV. However, researchers are faced with challenges to extract the maximum performance out of HEVs due to the contradicting nature between its main objectives, namely vehicle performance, fuel consumption and cost. In this study, an investigation focusing on the fuel-saving potential of a power-split type HEV using a fuzzy logic-based EMS is conducted. The purpose of this research is to explore methods to improve fuel efficiency of a HEV through a smart and adaptive EMS. The power flow in the proposed model is decided based on its current vehicle speed and the global discharge rate value derived from the real-time battery state-of-charge and remaining trip distance. From simulations over standard drive cycles, the proposed controller is able to outperform a rule-based EMS by an improvement of up to 65.4% in terms of fuel consumption which subsequently reduces the volume of pollutants released to the atmosphere
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