615 research outputs found
Modeling of NH3–NO–SCR reaction over CuO/γ-Al2O3 catalyst in a bubbling fluidized bed reactor using artificial intelligence techniques
No full textComparative study of the artificial neural network and mechanistic model was carried out for NO removal in a bubbling fluidized bed reactor. The effects of temperature, superficial gas velocity and ammonia/nitric oxide ratio on the NO removal efficiency were determined and their optimum conditions were estimated by the experimental study, the artificial neural network and mechanistic models as well. The optimum values of ammonia/nitric oxide ratio, temperature and superficial gas velocity for the maximum NO removal efficiency were found to be 1.5, 300 degrees C and 0.098 m/s, respectively. A mechanistic model was implemented in our previous study [Muhammad F. Irfan, Sang Done Kim and Muhammad R. Usman, 2009] and it was found that this model fitted well only at specific condition i.e. maximum conversion temperature (300 degrees C). However, it failed to perfectly match with rest of the experimental data points at other temperatures and parametric conditions as well. To improve this, an artificial neural network modeling strategy was applied and its predictions were evaluated which were favorably matched with the experimental data rather than the mechanistic model. (C) 2011 Elsevier Ltd. All rights reserved
GLT matrix-sequences and few emblematic applications
No full textThis thesis advances the spectral theory of structured matrix-sequences within the framework of Generalized Locally Toeplitz (GLT) ∗-algebras, focusing on the geometric mean of Hermitian positive definite (HPD) GLT matrixsequences and its applications in mathematical physics. For two HPD sequences {An}n ∼GLT κ and {Bn}n ∼GLT ξ in the same d-level, r-block GLT ∗-algebra, we prove that, when κ and ξ commute, the sequence of geometric means {G(An, Bn)}n is a GLT sequence with symbol (κξ)1/2, without requiring the almost-everywhere invertibility of either symbol, thereby settling [37, Conjecture 10.1] for r = 1, d ≥ 1. In degenerate cases, where symbols vanish on sets of positive measure, we identify conditions ensuring
that the geometric mean retains a GLT structure in the commuting setting, so having {G(An, Bn)}n ∼GLT G(κ, ξ). Conversely, for r > 1 with degenerate,
non-commuting symbols, we provide numerical evidence that the resulting sequence still admits a spectral symbol, with G(κ, ξ) being not well defined.
The latter implies that the result {G(An, Bn)}n ∼GLT G(κ, ξ) in the commuting setting is maximal. Numerical experiments in scalar and block settings,
in one and two dimensions, confirm the theoretical predictions and illustrate spectral behaviour. We sketch also the case of k ≥ 2 matrix-sequences, by
considering the Karcher mean. Preliminary results and numerical experiments indicate that {G(A(1)n, . . . A(k)n)}n ∼GLT G(κ1, . . . κk), if {A(j)n }n ∼GLT κj, for j = 1, . . . , k.
The GLT framework is further applied to mean-field quantum spin systems, with particular attention to the quantum Curie–Weiss model. In this context, we show that the structured matrices arising from the model form GLT sequences, enabling an explicit determination of their spectral distributions
in both unrestricted and symmetry-restricted cases. Numerical simulations validate the analysis and reveal additional spectral features such as eigenvalue localization and extremal behaviour.
In terms of mathematical tools, we use the axioms characterizing the d-level, r-block GLT ∗-algebra, the notion of approximating classes of sequences and the important two-sided ideal of zero-distributed matrix-sequences.This thesis advances the spectral theory of structured matrix-sequences within the framework of Generalized Locally Toeplitz (GLT) ∗-algebras, focusing on the geometric mean of Hermitian positive definite (HPD) GLT matrixsequences and its applications in mathematical physics. For two HPD sequences {An}n ∼GLT κ and {Bn}n ∼GLT ξ in the same d-level, r-block GLT ∗-algebra, we prove that, when κ and ξ commute, the sequence of geometric means {G(An, Bn)}n is a GLT sequence with symbol (κξ)1/2, without requiring the almost-everywhere invertibility of either symbol, thereby settling [37, Conjecture 10.1] for r = 1, d ≥ 1. In degenerate cases, where symbols vanish on sets of positive measure, we identify conditions ensuring
that the geometric mean retains a GLT structure in the commuting setting, so having {G(An, Bn)}n ∼GLT G(κ, ξ). Conversely, for r > 1 with degenerate,
non-commuting symbols, we provide numerical evidence that the resulting sequence still admits a spectral symbol, with G(κ, ξ) being not well defined.
The latter implies that the result {G(An, Bn)}n ∼GLT G(κ, ξ) in the commuting setting is maximal. Numerical experiments in scalar and block settings,
in one and two dimensions, confirm the theoretical predictions and illustrate spectral behaviour. We sketch also the case of k ≥ 2 matrix-sequences, by
considering the Karcher mean. Preliminary results and numerical experiments indicate that {G(A(1)n, . . . A(k)n)}n ∼GLT G(κ1, . . . κk), if {A(j)n }n ∼GLT κj, for j = 1, . . . , k.
The GLT framework is further applied to mean-field quantum spin systems, with particular attention to the quantum Curie–Weiss model. In this context, we show that the structured matrices arising from the model form GLT sequences, enabling an explicit determination of their spectral distributions
in both unrestricted and symmetry-restricted cases. Numerical simulations validate the analysis and reveal additional spectral features such as eigenvalue localization and extremal behaviour.
In terms of mathematical tools, we use the axioms characterizing the d-level, r-block GLT ∗-algebra, the notion of approximating classes of sequences and the important two-sided ideal of zero-distributed matrix-sequences
Visualization for UiTM timetable generation system using timetable JavaScript Plugin / Muhammad Faisal Norsham
No full textThis dissertation is motivated to develop an application that helps students manage and visualize their class schedule. By beginning a brief discussion related to timetable and class schedule, this study will expand the foundation for developing a functional and acceptable system that is capable of generating timetable based on a specific student’s class schedule. The first objective would be to design and develop a web application called Timetable Generation System. The second objective is to evaluate the functionality and user acceptance towards the said system. The system’s significance could ease the process of finding and arrange the student’s class schedule in a timetable which will dramatically reduce the time it takes for students to prepare their class schedule timetable every semester. Literature review will be discussed in various topics from class schedule timetabling to web application development. Three related works are included to analyse the related problems of the previous work done by other researchers and study the methods and approaches they used in developing their system. The methodology will discuss the SDLC approach in developing the project. The project development consists of four phases; analysis, design, development and testing. The system was evaluated using functional testing and User Acceptance Test. The tests were conducted in order to verify the system meet user requirements and users accept the developed system respectively. The author may improve the Timetable Generation System in the future by implementing a fully automatic application that require less input from users as well as developing a mobile platform version of the application. There is also a potential study to design and develop the same application but for examination schedule instead
Iqbal and the Cosmopolitan Horizon of Muslim Societies, by Faisal Devji
No full textFaisal Devji is Historian, Reader in Indian History at St. Antony's College, University of Oxford. He is the author of four books, Landscapes of the Jihad: Militancy, Morality, Modernity (Hurst, 2005), The Terrorist in Search of Humanity: Militant Islam and Global Politics (Hurst, 2009), The Impossible India: Gandhi and the Temptation of Violence (Harvard University Press, 2012) and Muslim Zion: Pakistan as a Political Idea (Harvard University Press, 2013). On Muhammad Iqbal (1877-1938) and t..
Pengantar Pelaksanaan Praktik Pengajaran Di Sekolah Bimbingan Dan Konseling Di Masa Pandemi Coronavirus Disease 2019 (Covid-19)
No full textBuku kategori psikologi yang berjudul Pengantar Pelaksanaan Praktik Pengajaran Di Sekolah Bimbingan Dan Konseling Di Masa Pandemi Coronavirus Disease 2019 (Covid-19) merupakan karya dari Ririanti Rachmayanie - Muhammad Andri Setiawan - Faisal Rachman. Beberapa hal yang perlu mendapat perhatian bersama bahwa pada tahun 2020 terjadi perubahan mendasar pelaksanaan praktik pengajaran di sekolah bimbingan dan konseling karena lebih menekankan pelaksanaan daring dengan memperhatikan keberadaan sekolah pada zona tertentu mengikuti protokol kesehatan yang diterapkan pemerintah. Kondisi di masa pandemi sangat beragam dan sangat fluktuatif sehingga diperlukan upaya yang cermat dan tepat. Keluwesan dan ketangkasan mahasiswa peserta praktik pengajaran di sekolah bimbingan dan konseling diperlukan untuk menghadapi kondisi yang seperti ini
Development of Anatomy Web-Based Assessment based Augmented Reality (AR)
No full textHasibuan, Sanusi, Azmin, Chairul, Nasution, Muhammad Faisal Ansari, Chairad, Muhammad. Development of Anatomy Web-Based Assessment based Augmented Reality (AR). Journal of Education, Health and Sport. 2022;12(9):68-74. eISSN 2391-8306. DOI http://dx.doi.org/10.12775/JEHS.2022.12.09.009
https://apcz.umk.pl/JEHS/article/view/39443
https://zenodo.org/record/7029343
The journal has had 40 points in Ministry of Education and Science of Poland parametric evaluation. Annex to the announcement of the Minister of Education and Science of December 21, 2021. No. 32343.
Has a Journal's Unique Identifier: 201159. Scientific disciplines assigned: Physical Culture Sciences (Field of Medical sciences and health sciences); Health Sciences (Field of Medical Sciences and Health Sciences).
Punkty Ministerialne z 2019 - aktualny rok 40 punktów. Załącznik do komunikatu Ministra Edukacji i Nauki z dnia 21 grudnia 2021 r. Lp. 32343. Posiada Unikatowy Identyfikator Czasopisma: 201159.
Przypisane dyscypliny naukowe: Nauki o kulturze fizycznej (Dziedzina nauk medycznych i nauk o zdrowiu); Nauki o zdrowiu (Dziedzina nauk medycznych i nauk o zdrowiu).
© The Authors 2022;
This article is published with open access at Licensee Open Journal Systems of Nicolaus Copernicus University in Torun, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 07.08.2022. Revised: 10.08.2022. Accepted: 28.08.2022.
Development of Anatomy Web-Based Assessment based Augmented Reality (AR)
Sanusi Hasibuan
State University of Medan
https://orcid.org/0000-0001-5125-5263
Chairul Azmin
State University of Medan
https://orcid.org/0000-0003-3731-2959
Muhammad Faisal Ansari Nasution
State University of Medan
https://orcid.org/0000-0003-3731-2959
Muhammad Chairad
State University of Medan
https://orcid.org/0000-0001-7724-4781
Abstract
The main objectives of this study are to describe the development design of the Augmented Reality (AR) based Anatomy web-based assessment, to describe the implementation of the Augmented Reality (AR) based Anatomy web-based assessment development, and to describe the teacher's response to the use of Augmented Reality (AR) based Anatomy web-based assessment. The research was conducted at the State University of Medan. This web-based assessment development design is based on the Borg & Gall research and development (R&D) stage pattern as adopted by Sugiyono. As for the product design model, this web-based assessment follows the ASSURE model. The results of this study indicate that the product developed, namely web-based assessment, has gone through design and testing and revision, so the product is declared suitable for use. Students also gave a good response, namely 92% of the use of the web as an assessment tool equipped with Augmented Reality (AR)-based animation.
KEYWORDS: WEB, Augmented Reality (AR), Assessment
Effect of CO on NO oxidation over platinum based catalysts for hybrid fast SCR process
No full textThe oxidation characteristics of NO over Pt/TiO2 (anatase, rutile) catalysts have been determined in a fixed bed reactor as a function of O-2, CO and SO2 concentrations in the presence of 8% water. The conversion of NO to NO2 increases with increasing O-2 concentration up to 12% and it levels off. This saturation effect is more pronounced over rutile-Pt/TiO2 (r-Pt/TiO2) than that of anatase-Pt/TiO2 (a-Pt/ TiO2). The presence of CO increases NO oxidation significantly and this enhanced effect is more pronounced on a-Pt/TiO2 than that on r-Pt/TiO2 with increasing CO concentration at lower temperatures. The same effect is also observed on the catalysts with different Pt and tungsten oxide (WO3) loadings. With increasing Pt and WO3 loadings on TiO2 support (wPt-WO3/TiO2), formation of NO2 is high even at lower temperatures. The presence of SO2 significantly suppresses the oxidation of NO over both r-Pt/TiO2 and a-Pt/TiO2 catalysts but it is less pronounced due to low stability of sulfate on a-Pt/TiO2. (c) 2006 Elsevier Ltd. All rights reserved.The authors would like to thank for a grant-in-aid of research to Dr. S.D. Kim from the Korea Energy Management Corporation (KEMCO) and Korea Power Engineering Company (KOPEC). Also, this work is partly supported by the Brain Korea 21 project
Antioxidant activities, total phenolic and flavanoid content in selected sarawak rice varieties using aqueous-based extraction technique / Muhammad Faisal Ikhwan Othman
No full textPlant-derived metabolites compounds known as phytochemicals which comes from foods such as cereals, beans, botanicals and beverages made from plants such as tea and wine are considered to playa major role in protecting human against diseases. Certain rice varieties contain concentrated pigment such as anthocyanidin or proanthocyanidin in the rice bran layer which contributed to different colors of rice and reported with high antioxidant activity depending on the content of phenolic compounds. In Sarawak, there are over 100 indigenous rice varieties with different colors that were produced by the locals with different colors but less scientific attention has been carried out on its health potential. This study aimed to determine the antioxidant activities, total phenolic content and total flavonoid content of selected Sarawak rice varieties using aqueous-based extraction technique. The rice samples were extracted using distilled water at 60 - 60°C for 6 hours and the rice extracts were analyzed for their antioxidant activity using DPPH radical scavenging and ferric reducing antioxidant potential (FRAP) assays as well as their total phenolic and total flavonoid content. In this study, CU demonstrated the highest scavenging activity (47.37 ± 1.09), followed by BP (22.62 ± 2.41), BR (11.90 ± 0.11), MU (10.92 ± 0.50), WK (10.08 ± 0.75) and BM (4.68 ± 0.38). BR demonstrated the highest ferric reducing antioxidant potential (0.27 ± 0.02), followed by WK (0.17 ± 0.01), MU (0.16 ± 0.01), BM (0.11 ± 0.02), CU (0.11 ± 0.04) and BP (0.05 ± 0.01). The results obtained for both total phenolic and flavonoid content were similar in the following order WK>MU>CU>BM>BP with BR exhibiting the highest total phenolic and flavonoid content (188.33 ± 6.76 and 229.33 ± 16.59 respectively). Pearson's correlation analysis demonstrated that DPPH was weakly correlated with both total phenolic as well as total flavonoid content (r = 0.287 and 0.317, respectively, P < 0.01) whereas significant correlation was seen between FRAP and both total phenolic and flavonoid content (r = 0.932 and 0.966, respectively, P < 0.01). CU and BR rice exhibited significantly higher antioxidant activities and contained higher polyphenolic contents compared to other rice samples used in the study. Significant ferric reducing antioxidant potential activity of BR rice was largely contributed by the total phenolic and total flavonoid contained in the rice. BP rice showed the lowest value for FRAP, total phenolic and total flavonoid contents whereas BM rice showed the lowest value for DPPH assay
The Use of Continuous Loop-Recording: A Step Forward in Accurately Assessing the True Success of Cox-Cryomaze Procedure
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