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2022

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Articles 1 - 30 of 2488

Full-Text Articles in Physical Sciences and Mathematics

Coconut Shell Waste Treatment Technology For A Sustainable Waste Utilization: A Case Study Of The Smes In Bohol Village, Indonesia, Wahyu Anggo Rizal, Ria Suryani, Roni Maryana, Dwi Joko Prasetyo, Diah Pratiwi, Yuli Ary Ratnawati, Dini Ariani, Andri Suwanto Dec 2022

Coconut Shell Waste Treatment Technology For A Sustainable Waste Utilization: A Case Study Of The Smes In Bohol Village, Indonesia, Wahyu Anggo Rizal, Ria Suryani, Roni Maryana, Dwi Joko Prasetyo, Diah Pratiwi, Yuli Ary Ratnawati, Dini Ariani, Andri Suwanto

ASEAN Journal of Community Engagement

This project focused on the introduction of liquid smoke and bio briquette manufacturing technology to small and medium enterprises (SMEs) located in Bohol Village, Gunungkidul, Indonesia through technology transfer, training, and mentoring. These SMEs are engaged in the food business with the main product jenang ketan, a traditional food from Gunungkidul, especially in Rongkop District, and very popular among communities around and outside Gunungkidul. The traditional preparation of jenang ketan produces several by-products in the form of waste, which is dominated by coconut shell biomass. The project’s technology transfer was carried out through the procurement of a series of pyrolysis …


Aljabar Semiprima Mendasar Dan Aplikasinya Pada Protokol Autentikasi, Khurul Wardati, Muhammad Zaki Riyanto Dec 2022

Aljabar Semiprima Mendasar Dan Aplikasinya Pada Protokol Autentikasi, Khurul Wardati, Muhammad Zaki Riyanto

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Library research dengan pendekatan deduksi-induksi ini bertujuan untuk mengkaji kesemiprimaan mendasar aljabar tak bebas yang dibangun secara hingga atas ring komutatif unital. Tujuan secara praktis penelitian ini adalah mengaplikasikan suatu contoh aljabar semiprima mendasar yang non-komutatif pada protokol autentikasi berdasarkan masalah dekomposisi. Di samping itu, aljabar semiprima mendasar lebih umum dari aljabar semiprima, hal ini ditunjukkan dengan suatu contoh penyangkal. Hasil utama dari penelitian ini adalah suatu aljabar yang dibangun secara hingga bersifat semiprima mendasar jika dan hanya jika ideal dasar nol merupakan irisan dari semua ideal dasar prima. Lebih lanjut ideal dasar nol merupakan satu-satunya ideal dasar nilpoten. Syarat …


Development Of Web-Based Project Tender Documents Application Using Extreme Programming Methods, Mustari Lamada, Aminuddin Bakry, Aulyah Zakilah Ifani, Khaerunnisa Khaerunnisa Dec 2022

Development Of Web-Based Project Tender Documents Application Using Extreme Programming Methods, Mustari Lamada, Aminuddin Bakry, Aulyah Zakilah Ifani, Khaerunnisa Khaerunnisa

Elinvo (Electronics, Informatics, and Vocational Education)

The application of technology is a need that is in demand in the industrial world today, especially in the field of contractors of goods and services that have implemented the use of applications to help the process of managing data and project documents in their companies. This study aims to optimize the web-based project tender document system using the extreme programming method. The extreme programming method consists of planning, design, coding, testing, and software increment. Research methods using extreme programming methods consisting of planning, design, coding, testing, and software increment. The planning stages obtain results in the form of functional …


Implementation Of Ahp And Black Box Testing To The Development Of An Information System For Assessing The Feasibility Of Bumdes Submissions, Hari Toha Hidayat, Husaini Husaini, Nanang Prihatin, Radhiyatammardhiyyah Radhiyatammardhiyyah Dec 2022

Implementation Of Ahp And Black Box Testing To The Development Of An Information System For Assessing The Feasibility Of Bumdes Submissions, Hari Toha Hidayat, Husaini Husaini, Nanang Prihatin, Radhiyatammardhiyyah Radhiyatammardhiyyah

Elinvo (Electronics, Informatics, and Vocational Education)

The existence of institutional village enterprises (BUMDES) has never been adequately monitored in terms of the growth of village-owned businesses in each village. According to the data, there are 17 BUMDES in the Muara District that have been inactive for the most part. Due to the difficulty of monitoring the progress of BUMDES, a significant number of them have become stalled or even inactive. In addition, many BUMDES managers are frequently unprepared to operate the newly opened business. Readiness in terms of the quality of human resources also affects the formation of BUMDES. Consequently, the objective of this study is …


Comparison Of Web 2.0 Use On State University Websites In Indonesia And Top World Universities Related To Webometric Ranking, Handaru Jati Dec 2022

Comparison Of Web 2.0 Use On State University Websites In Indonesia And Top World Universities Related To Webometric Ranking, Handaru Jati

Elinvo (Electronics, Informatics, and Vocational Education)

The present work determines the presence in the web 2.0 that twenty universities had through their educational portals. The universities are selected according to the Webometrics ranking (the ten best located in Indonesia and the best located worldwide) to identify what Web 2.0 tools they use. This study explores the educational portals of the twenty selected universities to determine which Web 2.0 tools they use and variables of the tools found will be assessed. The study only considers those Web 2.0 tools which are linked to the websites of universities. Of the two most used tools, the relevant indicators are …


Urban Farming: Empowerment To Increase Economic, Education, And Nutritional Benefit For The Sub-Urban Community, Nasruddin Nasruddin, Yusuf Donner Dwiyantama, Banu Muhammad, Anom Bowalaksono, Dian Ayubi, Sarah Islamiati Pertiwi Dec 2022

Urban Farming: Empowerment To Increase Economic, Education, And Nutritional Benefit For The Sub-Urban Community, Nasruddin Nasruddin, Yusuf Donner Dwiyantama, Banu Muhammad, Anom Bowalaksono, Dian Ayubi, Sarah Islamiati Pertiwi

ASEAN Journal of Community Engagement

This article discusses the urban farming program at Sekolah Master in Beji, Depok, Indonesia, which aims to provide the community with broader benefits, such as economy, education, and increased nutritional value. The project involves planting method that was introduced to this school community. The program itself consists of several stages, starting from the preparation—dissemination of the program and designing a plan for the greenhouse, the implementation—constructing the greenhouse and installing the automatic water system, planting the vegetation, and monitoring and evaluation of the program. Eventually, an evaluation of the successful program is required to determine whether the program can be …


How Do Cooperatives Enable Empowerment Among Rural Women? Evidence From The Municipality Of Cavinti, Laguna, Maria Theresa M. Castro-Bernardo, Liezel S. Cruz Dec 2022

How Do Cooperatives Enable Empowerment Among Rural Women? Evidence From The Municipality Of Cavinti, Laguna, Maria Theresa M. Castro-Bernardo, Liezel S. Cruz

Journal of Economics, Management and Agricultural Development

The persistent gender issues and their implications for sustainable development have led to several strategic yet collective schemes, such as the cooperatives, promising to contribute to (women) empowerment and social equality. Guided by Kabeer’s conceptual framework, this study analyzes the role of cooperative membership in promoting empowerment among its female coop-members in Cavinti, Laguna. Primary and secondary sources of data were used and analyzed using descriptive statistics and correlation analysis. The result indicates that cooperatives play a critical role in empowering women by providing new and/or improved knowledge and skills through capacity-building training necessary to make informed decisions, thus strengthening …


Market Analysis And Positioning Of Processed Halal Chevon Food Products, Jalaloden B. Marohom, Ivy Mar B. Cabornida Dec 2022

Market Analysis And Positioning Of Processed Halal Chevon Food Products, Jalaloden B. Marohom, Ivy Mar B. Cabornida

Journal of Economics, Management and Agricultural Development

Halal has gained popularity as a result of consumer concerns about food safety and ethical issues. Chevon is an important source of protein. However, no halal chevon products are commercially produced. Hence, the study aimed to develop positioning strategies to commercialize the products. A survey was undertaken of 400 potential consumers in the Philippines. The majority of the respondents were willing to buy halal food products. Descriptive statistics were applied, and findings revealed that products were generally acceptable. Potential consumers prefer it in wide assortment, in proper packaging, has informative labels, and easy to locate. However, their preference is significantly …


Ex-Ante Cost-Benefit Analysis Of High-End And Low-Cost Wireless Sensor Network (Wsn) Technology Packages For Efficient Irrigation Water Management In The Philippines, Marielle Q. Aringo, Victor B. Ella, Camille G. Martinez, Gamiello S. Pereira Dec 2022

Ex-Ante Cost-Benefit Analysis Of High-End And Low-Cost Wireless Sensor Network (Wsn) Technology Packages For Efficient Irrigation Water Management In The Philippines, Marielle Q. Aringo, Victor B. Ella, Camille G. Martinez, Gamiello S. Pereira

Journal of Economics, Management and Agricultural Development

Four wireless sensor network (WSN) technology packages developed for efficient irrigation water management in the Philippines were subjected to ex-ante cost-benefit analysis (CBA) to assess their financial viability. The WSN technologies include high-end and low-cost wireless sensors for upland crop production with drip irrigation system and lowland crop production with alternate wetting and drying (AWD). Results showed that the high-end WSN technology packages are only viable for high-value crops such as red onion, bell pepper, and hot pepper. The low-cost WSN technology packages are viable for all selected crops except sweet corn. Minimum areas were also generated for each crop …


Preferences Of Coffee Farmers For Attributes Of Selected Coffee Technologies In The Philippines, Jayson S. Cabral, Dia Noelle F. Velasco, Mar B. Cruz, Nohreen Ethel P. Manipol, Hannah D. Miranda-Quibot Dec 2022

Preferences Of Coffee Farmers For Attributes Of Selected Coffee Technologies In The Philippines, Jayson S. Cabral, Dia Noelle F. Velasco, Mar B. Cruz, Nohreen Ethel P. Manipol, Hannah D. Miranda-Quibot

Journal of Economics, Management and Agricultural Development

This paper looked into the preferences of 151 coffee farmers for the attributes of selected coffee technologies. The study was done to help guide technology developers in crafting post harvest processing facilities for coffee which their target market will need which can lead to a higher probability of commercialization of new coffee technologies. The study examined the preferences for attributes for coffee dryers, moisture meters, coffee depulpers, and coffee sorters using the Analytic Hierarchy Process (AHP) framework. The results revealed that the quality of the final product is the top priority for coffee farmers when choosing a coffee dryer. Non-destructiveness …


Pollution Emissions And Economic Growth In Asia Through The Lens Of The Environmental Kuznets Curve, Brian Jason H. Ponce, Yolanda T. Garcia, Gideon P. Carnaje, Agham C. Cuevas Dec 2022

Pollution Emissions And Economic Growth In Asia Through The Lens Of The Environmental Kuznets Curve, Brian Jason H. Ponce, Yolanda T. Garcia, Gideon P. Carnaje, Agham C. Cuevas

Journal of Economics, Management and Agricultural Development

The nonlinear relationship of pollution emissions with economic growth alongside energy consumption variables was examined to test the Environmental Kuznets Curve (EKC) hypothesis using a panel sample comprising 34 Asian economies from 2001 to 2013. Panel Autoregressive Distributed Lag models in the forms of Pooled Mean Group and Mean Group models were estimated and tested against one another using the Hausman test. For robustness checks, the same econometric techniques were applied to disaggregated panel groups based on income classifications. The study reveals that, while the EKC hypothesis holds in Asia, the findings were not robust across the disaggregated panel groups. …


Klasifikasi Kematangan Manggis Berdasarkan Fitur Warna Dan Tekstur Menggunakan Algoritma Naive Bayes, Raihan Abimanyu Suharman, Hartono Hartono Dec 2022

Klasifikasi Kematangan Manggis Berdasarkan Fitur Warna Dan Tekstur Menggunakan Algoritma Naive Bayes, Raihan Abimanyu Suharman, Hartono Hartono

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Manggis merupakan salah satu komoditas buah asli Indonesia yang memiliki prospek pasar yang menjanjikan, terlebih dalam pasar ekspor. Namun masih ada permasalahan dalam hal penyortiran buah hasil panen. Buah manggis hasil panen disortir berdasarkan kematangan buahnya untuk tujuan pasar yaitu pasar ekspor dan pasar domestik. Faktor penentu kematangan buah manggis adalah warna dan tekstur dari kulit buahnya. Penelitian ini bertujuan untuk mengklasifikasi kematangan buah manggis berdasarkan warna dan tekstur menggunakan algoritma Naive Bayes. Fitur warna dan tekstur yang diekstraksi adalah kontras, korelasi, energi, homogenitas, entropi, standar deviasi, mean, varians, skewness, dan kurtosis. Fitur diekstraksi dari citra RGB, citra grayscale, citra …


Seleksi Nilai Fuzziness Exponent Optimal Pada Algoritma Fuzzy C-Means Untuk Mengelompokkan Provinsi Di Indonesia Berdasarkan Indikator Pembangunan Ekonomi, Umu Sa'adah, Endang Wahyu Handamari, Kwardiniya Andawaningtyas, Nur Fitriana Setyowati Dec 2022

Seleksi Nilai Fuzziness Exponent Optimal Pada Algoritma Fuzzy C-Means Untuk Mengelompokkan Provinsi Di Indonesia Berdasarkan Indikator Pembangunan Ekonomi, Umu Sa'adah, Endang Wahyu Handamari, Kwardiniya Andawaningtyas, Nur Fitriana Setyowati

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Pada tahun 2015, PBB merancang 17 Tujuan Pembangunan Berkelanjutan (SDGs) untuk mencapai kesejahteraan manusia pada tahun 2030 dengan mengintegrasikan tiga dimensi pembangunan berkelanjutan: ekonomi, sosial, dan lingkungan. Salah satu faktor yang digunakan untuk menilai keberhasilan sebuah wilayah atau pemerintahan dalam mengelola kesejahteraan dan kemakmuran masyarakat adalah tingkat perekonomian. Untuk mewujudkan kondisi tersebut diperlukan strategi dalam pembangunan pada sektor ekonomi. Penelitian ini bertujuan untuk mengelompokkan Provinsi di Indonesia menjadi 3 klaster berdasarkan indikator pembangunan ekonomi menggunakan algoritma fuzzy c-means. Penentuan 3 klaster dimaksudkan untuk klaster provinsi dengan tingkat pembangunan ekonomi rendah, sedang dan tinggi. Data yang digunakan dalam penelitian ini …


Teori Titik Tetap Untuk Pemetaan (ψ,φ)_Ω-Kontraksi Pada Ruang P-Metrik Modular Berorder, Afifah Hayati, Lusi Harini, Ambar Winarni, Nur'aini Muhassanah Dec 2022

Teori Titik Tetap Untuk Pemetaan (ψ,φ)_Ω-Kontraksi Pada Ruang P-Metrik Modular Berorder, Afifah Hayati, Lusi Harini, Ambar Winarni, Nur'aini Muhassanah

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Penelitian ini bertujuan untuk memberikan definisi pemetaan (psi,varphi)_omega-kontraksi dalam ruang p-metrik modular, memberikan teorema titik tetap untuk pemetaan -kontraksi pada ruang p-metrik modular, dan memberikan aplikasi dari teorema titik tetap tersebut. Penelitian ini dilakukan dengan memperumum definisi pemetaan (psi,varphi)_omega-kontraksi dalam ruang p-metrik dan teorema titik tetapnya ke dalam ruang p-metrik modular. Hasil penelitian menunjukkan bahwa pemetaan (psi,varphi)_omega-kontraksi dapat didefinisikan dalam ruang p-metrik modular dan teorema titik tetap untuk pemetaan tersebut pada ruang p-metrik modular dapat diberikan dengan penambahan beberapa sifat yang diasumsikan. Selain itu, hasil penelitian lainnya adalah aplikasi teorema titik tetap tersebut yang menjamin eksistensi solusi suatu persamaan integral …


Perbandingan Metode Fuzzy Times Series Cheng Dan Fuzzy Times Series Markov Chain Dalam Memprediksi Tingkat Pengangguran Terbuka Di Bali, Kadek Tresna Dwipayana, I Gusti Nyoman Yudi Hartawan, I Made Candiasa Dec 2022

Perbandingan Metode Fuzzy Times Series Cheng Dan Fuzzy Times Series Markov Chain Dalam Memprediksi Tingkat Pengangguran Terbuka Di Bali, Kadek Tresna Dwipayana, I Gusti Nyoman Yudi Hartawan, I Made Candiasa

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Penelitian ini bertujuan menemukan model untuk tingkat pengangguran terbuka di Bali dengan Fuzzy Times series Cheng (FTS Cheng) dan Fuzzy Times series Markov Chain (FTS Markov Chain) serta membandingkan tingkat akurasi kedua model tersebut. Jenis penelitian ini adalah jenis penelitian kuantitatif. Data tingkat pengangguran terbuka di Bali yang digunakan sebanyak 34 dari periode Februari 2006 sampai dengan Agustus 2021. Dari 34 data kemudian dibagi menjadi dua dengan proporsi 30% data latih dan 70% data uji. Tahapan penelitian yang dilakukan dengan menghitung FTS Cheng dan FTS Markov Chain pada data latih kemudian dilanjutkan pada data uji. Selanjutnya model FTS Cheng dan …


Mathematics Model Of Inheritance Three Different Traits In Genetics With Matrix Approach, Jufra Jufra, Asrul Sani, Sardin Sardin Dec 2022

Mathematics Model Of Inheritance Three Different Traits In Genetics With Matrix Approach, Jufra Jufra, Asrul Sani, Sardin Sardin

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Mathematical models can solve problems to find out which individuals are superior from crosses in the field of genetics. The matrix form of the mathematical model using the concept of matrix diagonalization can solve these problems. The general definition of matrix diagonalization is with the diagonalized matrix elements obtained from the probability of crossing the average parent and the recessive parent. The mathematical model of a cross between the average parent and recessive parent can be formulated as . The behavior of the solution from the cross is in the form of an explicit equation which can be formulated as …


Generalisasi Pertidaksamaan Euler Untuk Membuktikan Planaritas Graf K_5 Dan K_(3,3), Emut Emut Dec 2022

Generalisasi Pertidaksamaan Euler Untuk Membuktikan Planaritas Graf K_5 Dan K_(3,3), Emut Emut

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Kajian literatur tentang teori graf, khususnya planaritas suatu graf, yaitu menentukan apakah suatu graf itu termasuk graf planar atau bukan sudah banyak dibahas. Pada artikel ini pembahasan sedikit berbeda yaitu melakukan generalisasi atau perumuman teorema planaritas untuk dan teorema planaritas untuk Eksistensi perumuman ini penting karena dapat membuktikan planaritas dan sekaligus serta planaritas beberapa graf yang terkait. Pembuktian ketidakplanaran graf lengkap dan memberikan manfaat besar terhadap pengembangan teori planaritas graf dan memantapkan jaminan kebenaran pada terapannya. Urgensi pembuktiannya memiliki peran yang besar dalam menentukan planaritas graf-graf yang terkait, baik isomorfik atau subdivisi. Salah satu produk yang dihasilkan adalah teorema Kuratovski …


Algoritme Migrating Birds Optimization Dan Algoritme Particle Swarm Optimization: Penyelesaian Masalah Knapsack 0-1, Bib Paruhum Silalahi, Mohamad Novanto, Prapto Tri Supriyo Dec 2022

Algoritme Migrating Birds Optimization Dan Algoritme Particle Swarm Optimization: Penyelesaian Masalah Knapsack 0-1, Bib Paruhum Silalahi, Mohamad Novanto, Prapto Tri Supriyo

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Permasalahan knapsack merupakan salah satu masalah optimisasi. Masalah knapsack merupakan suatu permasalahan bagaimana memilih objek dari beberapa objek yang akan dimasukkan ke media penyimpanan dengan masing-masing objek memiliki bobot dan total bobot dari objek yang dipilih tidak boleh melebihi kapasitas media penyimpanannya, sehingga diperoleh nilai yang maksimal. Ketika objek yang dimasukkan ke dalam media penyimpanan bersifat harus dimasukkan semua atau tidak sama sekali, permasalahan ini dikenal dengan nama knapsack 0-1. Salah satu metode penyelesaian masalah knapsack 0-1 adalah dengan menggunakan metode meta-heuristic. Terdapat beberapa metode meta-heuristic seperti algoritma migrating birds optimization dan particle swarm optimization. Paper ini membahas …


Model Identifikasi Singkong Berdasarkan Warna Untuk Tepung Mocaf Berbasis Citra Digital, Sri Andayani, Ega Noviastuti Dec 2022

Model Identifikasi Singkong Berdasarkan Warna Untuk Tepung Mocaf Berbasis Citra Digital, Sri Andayani, Ega Noviastuti

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Penelitian ini bertujuan menghasilkan model untuk mengidentifikasi mutu singkong berdasarkan warna sebagai bahan pembuatan tepung mocaf dengan berbasis citra digital. Metode yang digunakan meliputi beberapa tahap pengolahan citra digital antara lain preprocessing dan ekstraksi ciri. Preprocessing meliputi cropping, resizing, dan grayscaling, sedangkan ekstraksi ciri meliputi segmentasi threshold dan binerisasi. Data penelitian menggunakan 118 citra singkong yang dibagi menjadi 72 citra data latih dan 46 data uji. Hasil penelitian berupa model identifikasi yang mendasarkan pada dua hal berikut: a) menggunakan ekstraksi ciri yang meliputi segmentasi threshold dengan nilai ambang 170 dan binerisasi dengan nilai ambang 75; dan b) penentuan mutu singkong …


Struktur Aljabar Koszul Pada Aljabar Lie M_(3,1) (R)‹Šã"–Glã"—_3 (R), Nur Hafizhah, Edi Kurniadi, Ema Carnia Dec 2022

Struktur Aljabar Koszul Pada Aljabar Lie M_(3,1) (R)‹Šã"–Glã"—_3 (R), Nur Hafizhah, Edi Kurniadi, Ema Carnia

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Dalam penelitian ini dipelajari aljabar Lie affine aff(3) berdimensi 12 yang merupakan jumlah semi langsung dari ruang vektor matriks berukuran 3x1 dan aljabar Lie matriks berukuran 3x3 . Tujuan penelitian ini adalah untuk membuktikan eksistensi dan struktur aljabar koszul pada aljabar Lie aff(3). Aljabar Lie tersebut adalah aljabar Lie Frobenius. Oleh karena itu, terdapat suatu fungsional linear yang mengakibatkan nilai fungsional linear pada matriks strukturnya tidak sama dengan nol. Fungsional linear yang demikian ini disebut fungsional Frobenius. Dalam penelitian ini diberikan juga bagaimana mendapatkan matriks struktur, menghitung determinannya serta memilih fungsional Frobenius yang tepat. Hasil yang diperoleh dalam penelitian ini …


Tinjauan Matematis Waktu Tundaan Pada Model Covid-19 Dengan Vaksinansi, Fitriana Yuli Saptaningtyas, Ahmadi Ahmadi Dec 2022

Tinjauan Matematis Waktu Tundaan Pada Model Covid-19 Dengan Vaksinansi, Fitriana Yuli Saptaningtyas, Ahmadi Ahmadi

PYTHAGORAS : Jurnal Matematika dan Pendidikan Matematika

Article ini membahas pemodelan matematika penyebaran Covid-19 dengan vaksinasi yang melibatkan waktu tundaan. Waktu tundaan merepresentasikan waktu individu mengalami penurunan kekebalan tubuh sehingga kembali rentan terhadap Covid-19 setelah sembuh. Kita tahu bahwa individu yang dinyatakan sembuh dari Covid-19 dapat terinfeksi kembali. Penelitian ini menganalisa titik ekuilibirum beserta kestabilannya, menentukan bilangan reproduksi dasar untuk melihat penyebaran penyakit, menentukan jenis bifurkasi yang muncul yang diakibatkan oleh waktu tundaan, dan melakukan simulasi numerik untuk melihat perilaku penyebaran penyakit. Di samping itu juga dilakukan kajian analitik untuk menentukan bilangan reproduksi dasar dan analisa perbandingan kestabilan lokal untuk model tanpa waktu tundaan dan dengan waktu …


The Metaverse: A Virtual World In The Palm Of Your Hand, Ziad Doughan, Hadi Al Mubasher, Mustafa El Bizri, Ali Haidar Dec 2022

The Metaverse: A Virtual World In The Palm Of Your Hand, Ziad Doughan, Hadi Al Mubasher, Mustafa El Bizri, Ali Haidar

BAU Journal - Science and Technology

This paper explores the actual and future impact of the Metaverse as a virtual space. Thus, it focuses the probe on the technical challenges that face this everlasting emerging technology. Today, the Metaverse presents a digital environment to build collective architecture and historical heritage in a virtual space. In this digital world, the modeling and design methodology is based on individual archetypes that can puzzle new elements. Currently, traditional methods require change and adaptation in both the education and work market, especially due to the remote-work integration in the last few years. For example, many components are required to build …


Structural And Magneto Conductivity Studies Of Nio/Smba2cu3o7-Δ Superconducting Composite, Hadi Basma, Sajida Rmeid, Ramadan Awad, Mohammed Said Dec 2022

Structural And Magneto Conductivity Studies Of Nio/Smba2cu3o7-Δ Superconducting Composite, Hadi Basma, Sajida Rmeid, Ramadan Awad, Mohammed Said

BAU Journal - Science and Technology

In this work, we investigate the effect of NiO nanoparticles' addition on the structure, superconductivity, and magneto conductivity for the SmBa2Cu3O7-δ phase. Composite nano/superconductor of (NiO)x/SmBa2Cu3O7-δ (0.00≤x≤0.12 wt.%) were prepared by conventional solid-state reaction technique and characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The orthorhombic structure was maintained whereas the lattice parameters showed unsystematic variations with the NiO nanoparticles addition. The superconducting transition temperature Tc, determined from electrical resistivity measurements, showed an enhancement with x up to 0.04wt.% followed by a reduction …


Palladium (Ii)-Catalyzed Selective Reduction Of 4’-(Phenylethynl)Acetophenone In The Presence Of A Formic Acid-Triethylamine Mixture, Suzanne Chayya, Akram Hijazi, Anis Daou, Ali Alaaeddine, Mohamad Sakr, Ghassan Younes, Mohammad El-Dakdouki Dec 2022

Palladium (Ii)-Catalyzed Selective Reduction Of 4’-(Phenylethynl)Acetophenone In The Presence Of A Formic Acid-Triethylamine Mixture, Suzanne Chayya, Akram Hijazi, Anis Daou, Ali Alaaeddine, Mohamad Sakr, Ghassan Younes, Mohammad El-Dakdouki

BAU Journal - Science and Technology

An efficient and straightforward palladium acetylacetonate-catalyzed hydrogen transfer of 4'- (phenylethynyl)acetophenone was developed in this study. Formic Acid was found to be the best hydrogen source in this catalytic system in the presence of triethylamine. Excellent conversions and selectivity were obtained in reducing the starting internal aromatic alkyne to either (E)-1-(4- styrylphenyl)ethanone or an interesting cyclic product, 1-(phenanthrene-3-yl)ethenone, over the ketone functional group present. Over-reduction was rarely seen. The reaction conditions were optimized in terms of the choice of the palladium catalyst, temperature, solvent, and the H-donor/base combination. Using this catalytic system, a one-step synthetic pathway of the …


Effects Of Bisphenol A And Nicotine On Cytochrome P450s In Brain And Liver Of Pregnant Rats, Mohammad Merii, Manal Fardon, Mahmoud Khalil Dec 2022

Effects Of Bisphenol A And Nicotine On Cytochrome P450s In Brain And Liver Of Pregnant Rats, Mohammad Merii, Manal Fardon, Mahmoud Khalil

BAU Journal - Science and Technology

Bisphenol A (BPA), a widely used chemical, is associated with endocrine disruption through its interactions with the aryl hydrocarbon receptor (AhR). BPA crosses into the human body mostly through migration from plastic packaging into the daily diet. AhR regulates the expression of drug-metabolizing enzymes (DMEs), including numerous CYP450s, and mediates xenobiotic reactions. This study aims at examining how the expression of CYP450s expression is affected, in the brain and liver of pregnant rats, by exposure to BPA and nicotine. Pregnant female Sprague-Dawley dams were exposed to increasing doses of BPA; 0 (control), 50, 500, and 5000 g/kg/day , or in …


Isolation And Characterization Of Cellulose Degrading Microorganisms Generating Electricity Using Microbial Fuel Cell, Lama Fayad, Rania Amer, Ahmad Abd El Nabi, Ali Hammoud, Hoda Yusef Dec 2022

Isolation And Characterization Of Cellulose Degrading Microorganisms Generating Electricity Using Microbial Fuel Cell, Lama Fayad, Rania Amer, Ahmad Abd El Nabi, Ali Hammoud, Hoda Yusef

BAU Journal - Science and Technology

Global warming and the accumulation of organic waste constitute a serious environmental problem. Therefore, microbial fuel cells (MFC) are an eco-friendly device that have significant capability for the production of electricity using biodegradable waste as fuel. Microorganisms used as catalysts in the anode compartment, execute a principal function in operating MFCs. The present study was conducted to isolate and to screen potential bioelectricity generating microorganisms from dumpsite soil samples and also to construct a domestic dual-chambered microbial fuel cell (MFC). Streptomyces fimicarius was found to be the best isolate for the degradation of cellulose and the production of bioelectricity. The …


Concrete Mix Design Using Abrams And Bolomey Methods, Salem Abdelgader, Marzena Kurpinska, Hakim Abdelgader, Jamal Khatib Dec 2022

Concrete Mix Design Using Abrams And Bolomey Methods, Salem Abdelgader, Marzena Kurpinska, Hakim Abdelgader, Jamal Khatib

BAU Journal - Science and Technology

This research studied concrete design methods. To design concrete using two methods, including the Abrams law and the modified Bolomey method. Concrete with assumed compressive strength 25, 30, 35, 40, and 45 MPa was researched. The research was conducted in the laboratory using two types of samples: cubic 15x15x15cm for compressive strength tests and cylinders ϕ-15cm, h-30cm for the splitting strength tests using the Brazilian method.

The analysis of the cement content in the composition of 1m3 of the mixture showed very large differences depending on the calculation method used. The cement content calculated according to the Abrams method ranged …


Famaid: A Tool For Aiding People With Disability, Mohamad Maad, Ahmad Owaydate, Mohammad Kojok, Firas Aboudaher, Layal Abu Daher, May Itani Dec 2022

Famaid: A Tool For Aiding People With Disability, Mohamad Maad, Ahmad Owaydate, Mohammad Kojok, Firas Aboudaher, Layal Abu Daher, May Itani

BAU Journal - Science and Technology

People with disabilities suffer from discrimination and obstacles that restrict them from participating in society on an equal basis with others every day. They are deprived of their rights to be included in ordinary school systems and even in the work market. In the process of raising awareness, facilitating dailyroutines, and developing guidance, the idea of assisting such people with handy tools/software arose and was implemented in the FamAid tool. FamAid offers people with hearing disability the opportunity to be engaged in the society through many facilities. In this work, we implemented a web application that serves as a community …


Utilization Of Biopertalite For Fuel Efficiency And Reduction In Co And Co2 Gas Emissions In Four-Wheel Motor Vehicles, Ridwan Iskandar, Hadiyanto Hadiyanto, Suherman Suherman, Zainul Akmar Zakaria Dec 2022

Utilization Of Biopertalite For Fuel Efficiency And Reduction In Co And Co2 Gas Emissions In Four-Wheel Motor Vehicles, Ridwan Iskandar, Hadiyanto Hadiyanto, Suherman Suherman, Zainul Akmar Zakaria

Makara Journal of Technology

Emissions of carbon monoxide (CO) and carbon dioxide (CO2) gases are the main problem that must be rectified as they are harmful and contribute to global warming through the greenhouse gas effect. In Indonesia, motor vehicles, especially four wheelers, are one of the biggest contributors with up to 71 million tons of CO2 emissions and energy consumption of 179 million barrel of oil equivalent. Bioethanol has octane rating >100, which is higher than that of gasoline; and emission contribution of only 0.02 kg/L, which is lower than that from gasoline (2.23 kg/L). Accordingly, a mixture of gasoline and bioethanol is …


Prevalence And Plasmid Profiles Of Enterobacteriaceae Isolates Obtained From Individuals With Asymptomatic Bacteriuria In Okada, Edo State, Nigeria, Osarumwense Precious Otote, Maureen Uchechukwu Okwu, Osazee Ekundayo Izevbuwa, Happy Ovuerhi Oferiofe Dec 2022

Prevalence And Plasmid Profiles Of Enterobacteriaceae Isolates Obtained From Individuals With Asymptomatic Bacteriuria In Okada, Edo State, Nigeria, Osarumwense Precious Otote, Maureen Uchechukwu Okwu, Osazee Ekundayo Izevbuwa, Happy Ovuerhi Oferiofe

Makara Journal of Science

Asymptomatic bacteriuria (ASB) is the presence of bacteria in apparently healthy individuals. Although, the prevalence varies widely with age, gender, and the presence or absence of genitourinary abnormalities, the detection of pathogenic bacteria in urine constitutes firm evidence of infection. The objectives of this study were to isolate members of the family Enterobacteriaceae from urine samples of research participants, and to determine the antibacterial susceptibility and plasmid profiles of the isolates. A total of 122 mid-stream urine samples consisting of 72 male and 50 female participants from selected primary and secondary schools were collected. The age of the participants used …