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International Symposium on Computing and Networking Workshops (CANDARW)

作者： Akihiro Fujiwara Kotaro Umetsu Fumiya Nozato Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology Iizuka Fukuoka Japan

In the membrane computing, the exponential number of membranes is usually used for computationally hard problems to create exhaustive solutions. However, the number of membranes means the number of cells, and reduction of the number of membranes must be considered because the cells cannot be created exponentially. In the paper, we propose an asynchronous P system for Hamiltonian cycle using with branch and bound to reduce the number of membranes. In addition, we evaluate the number of membrane used in the known and the proposed P systems with experimental simulations. The experimental results show validity and efficiency of the proposed P system.

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Bioethanol Production from Microalgae Biomass at High Solid Loadings

SSRN

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SSRN 2022年

作者： Condor, Billriz E. de Luna, Mark Daniel G. Chang, Yu-Han Chen, Jih-Heng Leong, Yoong Kit Chen, Po-Ting Chen, Chun-Yen Lee, Duu-Jong Chang, Jo-Shu Energy Engineering Program National Graduate School of Engineering University of the Philippines Diliman Quezon City1101 Philippines Department of Chemical Engineering College of Engineering University of the Philippines Diliman Quezon City 1101 Philippines Department of Chemical Engineering National Cheng Kung University Tainan701 Taiwan Research Center for Smart Sustainable Circular Economy Tunghai University Taichung Taiwan Department of Chemical and Materials Engineering Tunghai University Taichung Taiwan Department of Biotechnology and Food Technology Southern Taiwan University of Science and Technology Tainan71005 Taiwan University Center for Bioscience and Biotechnology National Cheng Kung University Tainan701 Taiwan Department of Mechanical Engineering City University of Hong Kong Kowloon Tang Hong Kong Department of Chemical Engineering and Materials Science Yuan Ze University Chung-Li32003 Taiwan

Industrial adoption of microalgae biofuel technology has always been hindered by its economic viability. To increase the feasibility of bioethanol production from microalgae, fermentation was applied to Chlorella vulgaris FSP-E biomass at high-solid-loading conditions. First, Chlorella vulgaris FSP-E was cultivated to produce microalgae biomass with high carbohydrate content. Next, different ethanol-producing microorganisms were screened. Saccharomyces cerevisiae FAY-1 showed no inhibition when fermenting high initial glucose concentrations and was selected for the fermentation experiments at high solids loading. Optimization of acid hydrolysis at high biomass loading was also performed. The fermentation of microalgal biomass hydrolysate produced a final ethanol concentration and yield higher than most reported literature using microalgae feedstock. In addition, the kinetics of bioethanol fermentation of microalgae hydrolysate under high solid loading were evaluated. These results show the potential of fermenting microalgae biomass at high solids loading in improving the viability of microalgae bioethanol production. © 2022, The Authors. All rights reserved.

关键词： Microalgae

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Synthesis and Evaluation of Metal-Impregnated Carbon Cloth Supplementation to Improve Anaerobic Digestion Performance from Municipal Sludge

SSRN

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SSRN 2023年

作者： Kumar, Vikas Devi, Parmila Patil, Abhishek Santana, Juan Camilo Bobowski, Jake S. Hallam, Steven J. Eskicioglu, Cigdem UBC Bioreactor Technology Group School of Engineering University of British Columbia Okanagan Campus KelownaBCV1V 1V7 Canada Department of Microbiology and Immunology University of British Columbia VancouverBCV6T 1Z4 Canada Department of Physics University of British Columbia Okanagan Campus KelownaBCV1V 1V7 Canada Graduate Program in Bioinformatics University of British Columbia VancouverBCV6T 1Z4 Canada Genome Science and Technology Program University of British Columbia 2329 West Mall VancouverBCV6T 1Z4 Canada Life Sciences Institute University of British Columbia VancouverBCV6T 1Z3 Canada Ecoscope Training Program University of British Columbia VancouverBCV6T 1Z3 Canada

This study investigated the effect of metal-impregnated carbon cloth (CC) supplementation on thermophilic anaerobic digestion (AD) improvement utilizing municipal sludge as a biomass input. Four types of metal-impregnated CC nanocomposites (Fe/CC, Ni/CC, Ni/Fe/CC, NiPcS/Fe/CC) were synthesized from activated CC (A-CC) using hydrothermal synthesis and compared with untreated CC (U-CC) to evaluate their functional significance for enhanced AD. The main factors inspected were electrical conductivity (EC) and Brunauer–Emmett–Teller (BET) surface area. A-CC had the highest surface area of 386.15 m2/g, followed by Fe/CC, NiPcS/Fe/CC, Ni/CC and Ni/Fe/CC with 140.96, 52.27, 43.52 and 36.07 m2/g, respectively. The A-CC and Fe/CC reactors produced 3.45 and 2.70 times more methane than Control (without CC) in the first 9 days. In contrast, the methane production for U-CC, Ni/CC, Ni/Fe/CC and NiPcS/Fe/CC was only 0.87, 1.26, 1.01 and 1.29 times, respectively, compared to Control. At a higher BET surface (>350 m2/g), the surface area becomes a more dominant factor, and the increase of EC value (>2.9*104 1/Ω.m) does not have an impact on methane enhancement. Microbial community analysis revealed that A-CC had the highest abundances of Syntrophomonas, Coprothermobacter and methanogenic populations, including Methanothermobacter and Methanosarcina, within 3 days compared to Control and metal-impregnated CC. There were minimal changes in microbial community composition in metal-impregnated CC compared to the U-CC. The result implies that the efficacy of CC supplementation for AD upgrading largely depends on the higher surface area compared to metal impregnation or conductivity. © 2023, The Authors. All rights reserved.

关键词： Anaerobic digestion

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Analysis of neural network algorithm in determining high school student department

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IOP Conference Series: Materials science and Engineering 2020年第1期725卷

作者： Novriadi Antonius Siagian Muhammad Zarlis Zakarias Situmorang Graduate Program of Computer Science Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia

In senior high schools, especially in the first class were required to place a department that is in accordance with the value produced. The application predicts student majors based on the value of students using artificial neural network algorithms using rapid miner to be able to produce more precise and faster accuracy results. The results obtained from the analysis carried out obtained an accuracy value of 71.86%.ANN has a network architecture that is a single layer net. Networks that have more than one layer are called multilayer net and competitive layer networks (competitive layer net). The shape of a multilayer net 1 or more has between the input layer and the output layer, which weighs between 2 adjacent layers. ANN architecture using 3 layers is 7 input layers, 6 hidden layers, and 2 output layers. 20 neurons are the number of neuron outputs to artificial neural networks

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Mobile game Application for Religion engagement

Mobile game Application for Religion engagement

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International Congress on Applied Information technology

作者： Dedy Prasetya Kristiadi Vindy Richard Sambera Andy Julianto Harco Leslie Hendric Spits Warnars Kiyota Hashimoto STMIK Raharja Tangerang Indonesia Game Application & Technology Program School of Computer Science Bina Nusantara University Jakarta Indonesia School of Computer Science Bina Nusantara University Jakarta Indonesia BINUS Graduate Program - Doctor of Computer Science Bina Nusantara University Jakarta Indonesia Faculty of Technology and Environment Prince Songkla University Phuket Campus Thailand

ISBN: (数字)9781728158624

ISBN: (纸本)9781728158631

Religion is a part of a fundamental human right to serve and worship their God according to their religion and belief. Mobile game application along with the development of mobile phone technology such as a smartphone, tablet, and laptop, can be used to increase the player or user interest to engage with religion thing. Using the mobile game application in mobile gadgets will expand quickly to install and use for religion engagement. The player can learn religion things with fun and entertain ways, where the player does not realize that they do something serious in an unserious way. This paper will explain the model system design for mobile game application for learning Catholicism in fun and entertaining way and for the first development was limited to only three Catholic catechisms such as bible learning, church lesson, and liturgy celebration. For the early development, three types of games were developed such as True or False game, Scramble words game, and multiple-choice game. The mobile game model was designed with a use case diagram, storyboard, and class diagram, where for the current implementation the mobile game application was implemented using a ten tables database.

关键词： Games Land mobile radio Random access memory computer science Mobile applications Mobile handsets Information systems

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A Comparison Study of Constriction and Random Inertia Weight Router Replacement Methods for WMNs Using WMN-PSODGA Hybrid Intelligent System

A Comparison Study of Constriction and Random Inertia Weight...

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Workshops of the 34th International Conference on Advanced Information Networking and Applications, WAINA 2020

作者： Ohara, Seiji Barolli, Admir Ampririt, Phudit Sakamoto, Shinji Barolli, Leonard Takizawa, Makoto Graduate School of Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-KuFukuoka811-0295 Japan Department of Information Technology Aleksander Moisiu University of Durres L.1 Rruga e Currilave Durres Albania Department of Computer and Information Science Seikei University 3-3-1 Kichijoji-Kitamachi Musashino-shiTokyo180-8633 Japan Department of Information and Communication Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-KuFukuoka811-0295 Japan Department of Advanced Sciences Faculty of Science and Engineering Hosei University Kajino-Machi Koganei-ShiTokyo184-8584 Japan

ISBN: (纸本)9783030440374

Wireless Mesh Networks (WMNs) are becoming an important networking infrastructure because they have many advantages such as low cost and increased high-speed wireless Internet connectivity. In our previous work, we implemented a Particle Swarm Optimization (PSO) based simulation system, called WMN-PSO, and a simulation system based on Genetic Algorithm (GA), called WMN-GA, for solving node placement problem in WMNs. Then, we implemented a hybrid simulation system based on PSO and distributed GA (DGA), called WMN-PSODGA. Moreover, we added in the fitness function a new parameter for the load balancing of the mesh routers called NCMCpR (Number of Covered Mesh Clients per Router). In this paper, we consider Constriction Method (CM) and Random Inertia Weight Method (RIWM). The simulation results show that CM has better performance than RIWM. © 2020, Springer Nature Switzerland AG.

关键词： Genetic algorithms

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Design and Implementation of Virtual TAP for SDN-based OpenStack Networking

Design and Implementation of Virtual TAP for SDN-based OpenS...

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IFIP/IEEE International Symposium on Integrated Network Management

作者： Seyeon Jeong Jae-Hyoung You James Won-Ki Hong Department of Computer Science and Engineering POSTECH Korea Graduate School of Information Technology POSTECH Korea

ISBN: (纸本)9781728106182;9783903176157

Currently, virtualization technology that enables a data center to efficiently use server resources is promising as cloud services are being prevalent with increasing traffic volumes and requirements for service quality. vTAP (Virtual Test Access Port), we propose in this work, can overcome the problem that existing hardware TAP devices cannot be used in duplicating inter-VM (Virtual Machine) packets being transmitted over virtual links. vTAP can be implemented using a virtual switch that provides network connectivity to VMs by switching packets over the virtual links. Port mirroring, or SPAN (Switched Port Analyzer), that is available in some software switches can be a naive solution but using it in a system that needs to treat a large volume of network traffic implies performance degradation in packet switching and error-prone manual configuration. In this work, we describe the design and detailed considerations on our OpenFlow-based vTAP implementation. It is based on Open vSwitch and ONOS (Open Network Operating System) SDN (Software-Defined Networking) controller to enable packet-level traffic monitoring in OpenStack environment. We also present the performance evaluation on our vTAP used in some network monitoring cases, with packet processing acceleration by DPDK (Data Plane Development Kit).

关键词： Monitoring Switches Servers Data centers Hardware Virtualization Cloud computing

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An Asynchronous P System Using Branch and Bound for Minimum Graph Coloring

An Asynchronous P System Using Branch and Bound for Minimum ...

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International Symposium on Computing and Networking Workshops (CANDARW)

作者： Kotaro Umetsu Akihiro Fujiwara Graduate School of Computer Science and Systems Engineering Kyushu Institute of Technology Iizuka Fukuoka Japan

Membrane computing is a computational model based on activity of cells. Using the membrane computing, a number of computationally hard problems have been solved in a polynomial number of steps using an exponential number of membranes. However, the number of membranes denotes the number of cells from practical point of view, and the reduction of the number of membranes must be considered for using the membrane computing in real world. In this paper, we propose an asynchronous P system with branch and bound for reducing the number of membranes. In addition, we evaluate validity of the proposed P system using computational simulations. The experimental results show the validity and efficiency of the proposed P system with branch and bound.

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Analysis of algorithm support vector machine learning and k-nearest neighbor in data accuracy

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IOP Conference Series: Materials science and Engineering 2020年第1期725卷

作者： Nuranisah Syahril Efendi Poltak Sihombing Graduate Program of Computer Science Faculty of Computer Science and Information Technology Universitas Sumatera Utara Medan Indonesia

K-Nearest Neighbor is a method of lazy learning method which is a group of instances-based learning. K-NN searches by searching for groups of objects in the training data that are closest to the object on new data or testing data. Support Vector Machine is a learning machine method that works with the aim of finding the best hyperplane that separates two classes in input space. school Achievement is an achievement obtained by serious learning and discipline. The category of outstanding students is to get a good average score and not have an attendance list, especially Absent (A) and a list of late attendance at school can be classified to obtain information on the accuracy of the data being tested. In the testing process both methods obtained good accuracy results between the two methods, namely K-NN obtained an accuracy of 88.52% while SVM is 91.07%.

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A self-stabilizing minimal K-grouping algorithm

arXiv

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arXiv 2019年

作者： Datta, Ajoy K. Larmore, Lawrence L. Masuzawa, Toshimitsu Sudo, Yuichi Department of Computer Science University of Nevada Las Vegas United States Graduate School of Information Science and Technology Osaka University

We consider the minimal k-grouping problem: given a graph G = (V, E) and a constant k, partition G into subgraphs of diameter no greater than k, such that the union of any two subgraphs has diameter greater than k. We give a silent self-stabilizing asynchronous distributed algorithm for this problem in the composite atomicity model of computation, assuming the network has unique process identifiers. Our algorithm works under the weakly-fair daemon. The time complexity (i.e. the number of rounds to reach a legitimate configuration) of our algorithm is (Equation Presented)where n is the number of processes in the network and D is the diameter of the network. The space complexity of each process is O((n + nfalse ) log n) where nfalse is the number of false identifiers, i.e., identifiers that do not match the identifier of any process, but which are stored in the local memory of at least one process at the initial configuration. Our algorithm guarantees that the number of groups is at most 2n/k + 1 after convergence. We also give a novel composition technique to concatenate a silent algorithm repeatedly, which we call loop composition. Copyright © 2019, The Authors. All rights reserved.

关键词： Complex networks

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