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Classifying Tweet Sentiment Analysis on Airlines using Random Forest Classifier, Naïve Bayes Classifier and K-Nearest Neighbors Classifier Algorithm

Classifying Tweet Sentiment Analysis on Airlines using Rando...

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2023 International Conference on Artificial Intelligence Robotics, Signal and Image Processing, AIRoSIP 2023

作者： Alexander, Ivan Heryadi, Yaya Lukas Suparta, Wayan Sonata, Ilvico Bina Nusantara University Binus Graduate Program Computer Science Computer Science Departement Jakarta11480 Indonesia Universitas Katolik Indonesia Atma Jaya Cognitive Engineering Research Group Faculty of Engineering Jakarta12930 Indonesia Institut Teknologi Nasional Yogyakarta Faculty of Industrial Technology Department of Electrical Engineering Yogyakarta55281 Indonesia

ISBN: (纸本)9798350327472

Opinion has always affected businesses and individuals especially from the Public. People react through social media and spread it incompletely. The situation was then accepted as public opinion. There are three categories of opinion i.e., positive, negative, and neutral. To investigate public opinion on a particular issue of interest, sentiment analysis might be employed. By offering a solution to the text classification challenge, this experiment focuses on the perception of airline tweets among the American public. We offer a method to classify tweets as positive, negative, or neutral using three machine learning classifiers: Random Forest Classifier, Naive Bayes Classifier, and K-Nearest Neighbors Classifier. We examined the performance of three machine learning classifiers in terms of accuracy, average precision, average recall, and average f-1 score. The results demonstrate that the Random Forest Classifier, which produces 82% accuracy, 80% average precision, 82% average recall, and 80% average f1-score, performs the best among the machine learning classifiers. © 2023 IEEE.

关键词： Tweets

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Design and Evaluation of Magnetic Induction Spectroscopy Probe for pH Measurement in Fetal Hypoxia Using COMSOL Multiphysics Simulation 3rd

Design and Evaluation of Magnetic Induction Spectroscopy Pro...

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3rd International Conference on Control, Instrumentation and Mechatronics engineering, CIM 2022

作者： Halim, S. F. Abdul Zakaria, M.H. Zakaria, Z. Ahmed, A.A. Norali, A.N. Noor, A. Mohd Pusppanathan, J. Rahiman, M. H. Fazalul Muji, S. Z. Mohd Rahim, R. Abdul Biomedical Electronic Engineering Faculty of Electronic Engineering Technology Universiti Malaysia Perlis Perlis Arau02600 Malaysia Universiti Teknologi Malaysia Johor Skudai81310 Malaysia Mechatronic Engineering Program Faculty of Electrical Engineering Technology Universiti Malaysia Perlis Perlis Arau02600 Malaysia Electronic Engineering Department Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Johor Batu Pahat Parit Raja86400 Malaysia School of Electrical Engineering Faculty of Engineering Universiti Teknologi Malaysia Johor Skudai81310 Malaysia

ISBN: (纸本)9789811939228

Fetal Blood Sampling (FBS) is the term used to describe the current method of monitoring the foetal condition within the mother’s womb. FBS required the medical officer to make a small incision on the foetus’s head in order to collect blood for analysis of the blood pH level in order to prevent acidosis or foetal hypoxia. The FBS method, on the other hand, is invasive and increases the risk of infection for both mother and child. Magnetic Induction Spectroscopy (MIS) is a novel method for diagnosing the foetus’s pH level that is non-invasive and non-intrusive. A single channel MIS system is composed of a transmitter (TX), a receiver (RX), and an electrical circuit that generates and receives magnetic fields in response to the conductivity of the sample (blood) due to the presence of weak electrolytes (H+ and OH-). The purpose of this research is to develop and evaluate five different designs of TX-RX coils. The coils are designed using the Planar Zero Flow Coil (PZFC) concept, which allows for multiple coil configurations and input-output configurations. The results show that Design 2 open set model was the optimal coil design for MIS system probe, as well as some contributions to the pH evaluation process. © 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Spectroscopy

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The obstacles of green building implementation in Semarang city 9

The obstacles of green building implementation in Semarang c...

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9th engineering International Conference, EIC 2020

作者： Nugradi, D.N.A. Study Program of Architecture Department of Civil Engineering Faculty of Engineering Universitas Negeri Semarang Indonesia

The Semarang City Government has issued a Mayor Regulation on Green Buildings since 2019. Since then the construction of buildings with a certain floor area in Semarang City must follow this regulation. Evaluating implementation constraints related to green building construction based on the experience of the development actors, is an important thing to do. This study aims to identify obstacles in realizing green buildings in the city of Semarang. Data collection was carried out through a questionnaire survey of respondents from development actors involved in green buildings such as contractors, consultants and project owners and bureaucratic officials related to green building licensing. Data analysis was performed using descriptive analysis to reach agreement between respondents. Next, a hierarchy of these constraints will be sought. Constraints found in realizing green buildings are: lack of socialization from the city government, alternative materials, lack of best practices, experts, and financing. For this reason, a strategy is needed to overcome these obstacles from every aspect or based on a combined consideration of all aspects. © Published under licence by IOP Publishing Ltd.

关键词： Surveys

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The impact of bottom water light exposure on electrical and sediment remediation performance of sediment microbial fuel cells

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Chemosphere 2024年 362卷 142720页

作者： Misali, Rashida Mohd Noor, Nurfarhana Nabila Oktavitri, Nur Indradewi Kim, Kyunghoi Department of Ocean Engineering Pukyong National University Busan48513 Korea Republic of Study Program of Environmental Engineering Faculty of Science and Technology Universitas Airlangga Surabaya60115 Indonesia

Sediment microbial fuel cells (SMFCs) generate bioelectricity from benthic sediments and thus providing both bioelectricity generation and sediment remediation. However, the high internal resistance of the cathode leads to a low power output, which requires research on cathode treatment. In this study, we explored the influence of light irradiation on bioelectricity production and nutrient removal in the SMFC system. The microcosm experiment of the SMFC system was designed with artificial illumination of 500 lux (light-SMFC) and compared with dark conditions of 15 lux (dark-SMFC), which showed that the current increases during photoperiods. The study reveals that light-illuminated SMFC consistently produced the highest voltage, with the highest voltage (553 mV) being 1.3 times higher than the dark-SMFC (440 mV). The polarization curves show a significant reduction in internal cathodic resistance under light condition, resulting in increased voltage generation. The light-SMFC exhibits the highest maximum power density of 35.93 mW/m2, surpassing the dark SMFC of 31.13 mW/m2. It was found that light illumination in the SMFC system increases oxygen availability in the cathodic region, which supports the oxygen reduction reaction (ORR) process. At the same time, the high bioelectricity output contributes to the highest sediment remediation by greatly reducing the chemical oxygen demand (COD) and phosphate (PO4–P) concentrations. The study highlights the potential of light illumination in mitigating cathodic limitation to improve SMFC performance and nutrient removal. © 2024

关键词： Microbial fuel cells

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The developing hairpiece module of the students at vocational secondary schools 6

The developing hairpiece module of the students at vocationa...

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6th International Conference on Technology and Vocational Teachers, ICTVT 2020

作者： Marliati, N. Agrevinna, M. Cosmetology Study Program Faculty of Engineering Universitas Negeri Yogyakarta Indonesia

This study aims to analyze the validity and effectiveness of the hairpiece module. The research method used is development or known as the Research and Development method. The stages in the research process are the analysis, design, development, implementation, and testing stages. Tests carried out in the form of validation were carried out by expert judgments or media and material experts, then the media was tested by students. The results of this study get the assessment of media experts in the very feasible category and material experts in the very feasible category. The results of student trials in small group trials were in the good category and large group trials were included in the good category. The analysis of the pre-test and post-test results showed a gain of 0.53 in the experimental group with moderate criteria and a gain of 0.42. © Published under licence by IOP Publishing Ltd.

关键词： Students

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Conceptual Model of Graph-based Individual Tree and Its Utilization in Digital Twin and Metaverse of Urban Forest

Conceptual Model of Graph-based Individual Tree and Its Util...

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2024 Symposium on Spatial Information to Empower the Metaverse

作者： Ambarwari, Agus Suwardhi, Deni Rani, Medria Shekar Husni, Emir Junaidy, Deny Willy Agirachman, Fauzan Alfi Murtiyoso, Arnadi Griess, Verena Christiane Doctoral Program of Electrical Engineering and Informatics School of Electrical Engineering and Informatics Institut Teknologi Bandung Jl. Ganesha No.10 Bandung40132 Indonesia Faculty of Earth Sciences and Technology Institut Teknologi Bandung Indonesia School of Architecture Planning and Policy Development Institut Teknologi Bandung Indonesia School of Electrical Engineering and Informatics Institut Teknologi Bandung Indonesia Faculty of Art and Design Institut Teknologi Bandung Indonesia Department of Environmental Systems Science Forest Resources Management Institute of Terrestrial Ecosystems Zurich8092 Switzerland

3D city models are an important cornerstone in the development of digital twin cities, allowing for various analyses and simulations. CityGML, as an open standard for 3D city models, emphasizes five main aspects: scale or level of detail (LoD), semantics, geometry, topology, and appearance. One of the important elements in CityGML 3D city models is representation of vegetation. Vegetation in CityGML, especially individual trees, is still limited in terms of detail and resolution, reducing its effectiveness for specific applications. This paper proposes a graph-based conceptual model for individual trees that conforms to the CityGML v2.0 specification. The model refers to the morphological structure of a tree consisting of roots, trunk, and crown (including branches, twigs, and leaves), and considers the five main aspects of CityGML. By enhancing semantic information and geometric details, the model aims to provide an information-rich and realistic representation of individual trees in a 3D city environment. The 3D tree model created based on this conceptual model may be applicable in the development of digital twin urban forests and virtual forest simulations that utilize immersive technologies such as the metaverse. This research opens up new opportunities in the development of solitary vegetation objects through CityGML ADE by including more detailed semantic and topological information. © Author(s) 2024.

关键词： Digital elevation model

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Analysis of Six-spoked Asterisk Slot CPW Antenna for Wireless Communication Systems 9

Analysis of Six-spoked Asterisk Slot CPW Antenna for Wireles...

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9th International Conference on Wireless and Telematics, ICWT 2023

作者： Nur Rahkmi, Hafizha Silmi Arief Hakim, Nurul Fahmi Juanda, Enjang Akhmad Ridwan, Azwar Mudzakkir Al Qibtiya, Mariya Gunawan, Heri Universitas Pendidikan Indonesia Dept. of Electrical Eng. Education Bandung Indonesia Uin Sunan Gunung Djati Dept. of Electrical Engineering Bandung Indonesia Uin Sunan Gunung Djati Indonesian Tadris Study Program Bandung Indonesia

ISBN: (纸本)9798350305029

Coplanar waveguide (CPW) antennas are widely used in wireless communication systems because they can be easily integrated with microwave circuits. This article describes a method for improving the performance of CPW antennas by incorporating a slot into the patch design. The antenna was fabricated on an FR4 substrate with dimensions of 43 mm x 40 mm and a thickness of 1.6 mm. The patch section of the antenna was modified by incorporating a slot. The size and shape of the slot were adjusted to achieve optimal performance. The most effective modified design was then fabricated and its properties were measured. The fabricated antenna exhibited an operational frequency range of 2.24 GHz to 7.30 GHz. It also had an omnidirectional radiation pattern and a maximum gain of 5.825 dB. © 2023 IEEE.

关键词： Coplanar waveguides

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Formulation of pomade with atisiri oil pandan wangi leaves (pandanus amaryllifolius roxb.) 6

Formulation of pomade with atisiri oil pandan wangi leaves (...

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6th International Conference on Technology and Vocational Teachers, ICTVT 2020

作者： Siregar, I.P. Marliati, N. Cosmetology Study Program Faculty of Engineering Universitas Negeri Yogyakarta Indonesia

This research aims to: 1) know the formulation of pomade making from aromatic pandan wangi leaf essential oil, 2) know the characteristics of pomade from the essential oil of pandan wangi leaves, and 3) know the quality of pomade from the essential oil of fragrant pandan leaves, and 4) the anti-fungal activity of pomade from the essential oil of pandan wangi leaves. Research methods used by research and development (R&d) models. Formulation of pomade manufacture of pandan wangi leaf essential oil is carried out based on the results of research that produces a stable formula that is pomade with the appropriate quality SNI with the base of pomade type oil based and not petrol based with a concentration of 34% of the total weight of pomade. Pomade formula is added to the essential oil of pandan wangi leaves with different concentrations of 2.5% (formula 1), 5% (formula 2) and 7.5% (formula 3). The characteristics and quality of pomade are known from organoleptic and hedonic tests that 47% of respondents strongly agree with pomade has the aroma of essential oil of pandan wangi leaves, 52% of respondents strongly agree with the color of pomade in dark green, 45% of respondents strongly agree with the texture of pomade very smooth without any granules, the respondent's response after pomade is on a smooth impression as much as 90.56% and the impression is moist as much as 90.00%. Formula 1 to formula 3 provide homogeneous results. Formulas 1 through 3 have a pH balance with pH range of hair and oil on the scalp which is 5.5 between pH 4.5 -5.5. The largest antifungal activity is in formula 3 (essential oil content 7.5%) with an inhibithor zone diameter of 37 mm. This indicates that the greater the concentration of pandan wangi leaf essential oil, the stronger the antifungal activity against niger's Aspergillus. © Published under licence by IOP Publishing Ltd.

关键词： Essential oils

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Demonstration of a Clock Distribution Method using Switching Matrices and a Two-Phase Clock Signal on an FPGA

Demonstration of a Clock Distribution Method using Switching...

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IEEE International Conference on Consumer Electronics (ICCE)

作者： Ayumu Ogura Minoru Watanabe Nobuya Watanabe Information Technology Track Information Technology Electrical Engineering and Mathematical and Data Sciences Program Faculty of Engineering Okayama University Okayama Japan

ISBN: (数字)9798331521165

ISBN: (纸本)9798331521172

Very large-scale Integrations (VLSIs) are vulnerable to radiation, and VLSIs used in high radiation environments such as space environment and nuclear power plants have a short lifetime. Therefore, we are developing radiation-hardened optically reconfigurable gate arrays. Conventional optically reconfigurable gate array VLSIs have a weak point in clock distribution. This problem can be solved by a new clock distribution exploiting reconfigurable switching matrices. However, in this case, the clock skew increases. Therefore, to solve this problem, this paper proposes a new clock distribution method using a two-phase clock signal and switching matrices on an optically reconfigurable gate array VLSI. The proposed clock distribution method has been demonstrated on a Cyclone V FPGA by using a 4-bit counter circuit. This paper presents the demonstration results.

关键词： Integrated optics Optical switches Radiation detectors Logic gates Very large scale integration Adaptive optics Field programmable gate arrays Power generation Clocks Optical arrays

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Blockchain-based Smart Contract in Service-Oriented Business Processes 7

Blockchain-based Smart Contract in Service-Oriented Business...

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7th International Conference on Information Technology Systems and Innovation, ICITSI 2022

作者： Parjuangan, Sabam Suhardi Nughara, I Gusti Bagus Baskara Khoirunnisa, Elvin Doctoral Program of School of Electrical Engineering and Informatics Institut Teknologi Bandung Bandung40132 Indonesia School of Electrical Engineering and Informatics Institut Teknologi Bandung Bandung40132 Indonesia University of Twente Faculty of Electrical Engineering Mathematics Computer Science Enschede Netherlands

ISBN: (数字)9781665465557

ISBN: (纸本)9781665465557

Service systems' business processes show the existence of mutual interaction between users. Running a particular business subdomain requires the role of each user. This role is in line with the concept contained in blockchain-based smart contracts. However, determining the subdomains that require smart contract coding is challenging in developing business processes that will run on the blockchain. We aim to determine the service-oriented business process (in the case of marketplace service) and the subdomain of the business process that requires smart contract coding. This article is essential because it shows how developing IT services without a smart contract differs from developing IT services with a smart contract. The main differences between developing services that need smart contracts and those that do not are that certain process can be run automatically and the record of activity in blockchain cannot be changed by anyone (tamper-proof). We outlined methods for designing marketplace business processes and defined subdomains to be encoded into smart contract code. After reviewing the three marketplace platforms, we determined eight subdomains of the marketplace business process. Two subdomains require smart contract coding from eight, namely the payment and complaint subdomains. © 2022 IEEE.

关键词： Smart contract

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