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International Conference on Wireless and Telematics (ICWT)

作者： Agus Juhana Rin Rin Nurmalasari Nurhidayatulloh Nurhidayatulloh Aprellia Anggraeni Ayung Candra Padmasari Maya Purnama Sari Multimedia Education Study Program Universitas Pendidikan Indonesia Bandung Indonesia Department of Electrical Engineering UIN Sunan Gunung Djati Bandung Indonesia Faculty of Technology and Vocational Education Universitas Pendidikan Indonesia Bandung Indonesia

The development of telematics technology is increasing rapidly and this capability is supported by multimedia devices or even telematics that supports the development of multimedia itself. For instance, in the configuration of telematics with websites to control air traffic with a voice communication system, multimedia applications serve as devices for monitoring the use of this technology. Consider the research trends, this study aims to evaluate the current development and trends of research on telematics and its multimedia applications through bibliometric analysis over the last two decades and a half (1999–2023). Several publication characteristics were analyzed, including the most cited articles in this field. This study uses data from the Scopus database to evaluate the productivity, impact, countries, research institutions, authors, and research performance of journals based on the impact factor, citation counts, and h-index. According to the result, the annual number of publications on this topic fluctuates but tends to increase, with Germany being the most prolific country producing articles in this field. Additionally, the most researched telematics and its multimedia applications and most cited lists offer insight into the future. This is the first study to use bibliometric analysis to evaluate research on telematics and its multimedia applications and is expected to be useful for telematics researchers by identifying potential research directions. In addition, this research serves as a valuable resource for future researchers and practitioners. However, improvements can be made by incorporating additional analysis, such as content analysis.

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Developing an android-based performance assessment instrument for hot Stone SPA course

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AIP Conference Proceedings 2024年第1期3145卷

作者： Mausa Agrevinna Ma’Rifani Fitri Arisa Elok Novita Cosmetology Study Program Faculty of Engineering Universitas Negeri Yogyakarta Yogyakarta Indonesia

This study aimed to 1) investigate the concepts of an android-based instrument for assessing performance in Hot Stone Spa course and 2) assess the feasibility of the instrument. This study was conducted based on the ADDIE design (Analysis, Design, Development, Implementation, and Evaluation). The feasibility test was carried out by means of questionnaires distributed to experts at educational evaluation, teaching materials, and media. Moreover, another questionnaire was filled out by lecturers and students (users). The subject of this study was Cosmetology students taking the Asian SPA course. The results of this study show that the product feasibility percentage is 88.49, so it is assumed that an android-based assessment instrument is highly feasible to use.

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Hotel Information System Management Audit Using COBIT 2019 - APO12

Hotel Information System Management Audit Using COBIT 2019 -...

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Innovation in Technology (INOCON), IEEE International Conference for

作者： Joy Nashar Utamajaya Suhono Harso Supangat Ford Lumban Gaol Benny Ranti BINUS Graduate Program School of Information System BINUS University Jakarta Indonesia School of Electrical Engineering and Informatic Bandung Institute of Technology Bandung Indonesia Computer Science Department BINUS Graduate Program Computer Science Bina Nusantara University Jakarta Indonesia Computer Science Department Faculty of Computer Science University of Indonesia Depok Indonesia

In general, public or private organizations or companies have used information-based technology as a support to improve business performance to be more effective and efficient in order to achieve a company’s business goals. Given the large contribution of information technology in the application of hotel applications as a supporting information system, it is a vital system that must avoid risks that can hinder and cause harm to the hotel management business processes. Therefore, it is necessary to carry out risk management using the COBIT 5 framework to manage possible risks that may occur based on the APO12 (Manage Risk) domain. From the evaluation results of the data obtained through observation and interviews as well as the calculation of the results of the questionnaire based on 6 APO12 subdomains, the results of the risk management level capability assessment in hotel applications are still at level 3 or have reached the level of established process with the target to be achieved at level 4 resulting in a gap of 1 level. Based on the results obtained, it is necessary to propose recommendations that can be used by hotels in improving the application of information technology risk management so that in the future it can achieve the expected target level so that the APO12 level of capability can increase and become more optimal.

关键词： Technological innovation Companies Risk management Information technology Interviews Information systems

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Predicting the depression in university students using stacking ensemble techniques over oversampling method

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informatics in Medicine Unlocked 2023年 41卷

作者： Daza Vergaray, Alfredo Miranda, Juan Carlos Herrera Cornelio, Juana Bobadilla López Carranza, Atilio Rubén Ponce Sánchez, Carlos Fidel Faculty of Engineering and Architecture School of Systems Engineering Universidad César Vallejo Lima Peru Faculty of Systems Engineering Professional Academic Career of Systems Engineering Universidad Andina Néstor Cáceres Velásquez Puno Peru Faculty of Pedagogy and Physical Culture Alternative Basic Education School - Primary Universidad Nacional de Educación Enrique Guzmán y Valle Lima Peru Faculty of Engineering Civil Engineering Study Program Universidad Privada Antenor Orrego Trujillo Peru Faculty of Industrial and Systems Engineering School of Industrial Engineering Universidad Nacional de Ingeniería Lima Peru

Background: Depression is that mental health disorder characterized by constant sadness for approximately 2 weeks, in which it generates an inability to do daily activities, and those affected lose interest in doing the things they previously enjoyed. About 1 billion people have mental disorders and more than 300 million people have depression globally. To predict depression, the use of machine learning techniques is essential, being helpful in obtaining automatic processes and creating models that help analyze and solve a problem. Objective: The objective of the study was to propose a method and 3 combined models based on Stacking to predict depression in university students of a public university. Methods: The dataset was composed of Computer and Systems engineering students from a public university (n = 284). Then cleaning and pre-processing was performed, where the data was reviewed using the Python program. In the balancing of the data, the data were divided into 5 values obtained and the oversampling method was performed, distributing the data according to the condition. Then we proceeded to partition the balanced data, while using the Cross validation method for data training. For the model and evaluation, 4 independent algorithms were used, and based on these 3 combined models were proposed. Results: Of the proposed combined models Ensemble Stacking 1 and Stacking 2 achieved the best Accuracy and ROC Curve score -micro and score-macro with 94.69% and 100.00%. In the same way with respect to sensitivity, Stacking 1 obtained the best sensitivity, accuracy and F1-Score, these being 94.22%, 94.09% and 94.12% respectively. Conclusions: This study emphasizes the application of the Ensemble Stacking method to detect depression early in students of a public university in Peru. With this technology, when using the combined method, it was possible to observe an improvement in the performance of the process for the prediction of depression, unlike performing it with in

关键词： Depression Oversampling Stacking ensemble University students

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Measurement of perception and implementation of sustainable supply chain management at PT Tetra Pak Indonesia 3

Measurement of perception and implementation of sustainable ...

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3rd International Conference on Eco engineering Development, ICEED 2019

作者： Kristina, Helena J. Christiani, Agustina Jobiliong, Eric Therio, Letycia Andreanto, Reza Industrial Engineering Study Program Universitas Tarumanegara Jakarta Indonesia Industrial Engineering Study Program Faculty of Science and Technology Universitas Pelita Harapan Lippo Village Tangerang Indonesia PT Tetra Pak Indonesia

Sustainable supply chain management (SSCM) is a form of proactive action taken by the company and its supply chain to remain competitive by introducing products and production processes that are environmentally friendly and socially *** Tetra Pak Indonesia as a company engaged in the processing and packaging for food and beverages, is committed to reduce the environmental impact of all operations and prioritize environmental aspects for each product and solution offered. Although there have been many sustainability efforts undertaken by PT Tetra Pak Indonesia, the perspective and implementation of its sustainable supply chain management has never been measured. This research was conducted to measure the perception and implementation of sustainable supply chain management (SSCM) activities of *** Pak Indonesia, in order to add information about the development of sustainable supply chain management practices in Indonesia. Data were collected in two ways: in depth interviews and questionnaires. Based on the result of interview and questionnaire, *** Pak Indonesia gets an actual implementation index value of SSCM activities of 0.88, and has an overall perception index value of 0.85. This indicates that PT. Tetra Pak Indonesia is a company that has a perception towards sustainability and has actually implemented SSCM activities. © 2020 Published under licence by IOP Publishing Ltd.

关键词： Supply chain management

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Recent trend of metal promoter role for CO₂ hydrogenation to C₁ and C₂₊ products

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South African Journal of Chemical engineering 2023年 44卷 14-30页

作者： Sholeha, Novia Amalia Holilah, Holilah Bahruji, Hasliza Ayub, Athirah Widiastuti, Nurul Ediati, Ratna Jalil, Aishah Abdul Ulfa, Maria Masruchin, Nanang Nugraha, Reva Edra Prasetyoko, Didik College of Vocational Studies Bogor Agricultural University (IPB University) Jalan Kumbang No. 14 Bogor 16151 Indonesia Research Center for Biomass and Bioproducts National Research and Innovation Agency of Indonesia (BRIN) Cibinong 16911 Indonesia Department Chemistry Faculty of Science and Data Analytics Institut Teknologi Sepuluh Nopember Kampus ITS Keputih Surabaya Sukolilo 60111 Indonesia Centre of Advanced Material and Energy Science Universiti Brunei Darussalam Jalan Tungku Link BE 1410 Brunei Darussalam Department of Chemical Engineering Faculty of Chemical and Energy Engineering Universiti Teknologi Malaysia 81310 UTM Skudai Johor Johor Bahru Malaysia Centre of Hydrogen Energy Institute of Future Energy Universiti Teknologi Malaysia Skudai 81310 UTM Skudai Johor Johor Bahru Malaysia Chemistry Education Study Program Faculty of Teacher Training and Education Sebelas Maret University Jl. Ir. Sutami 36A Surakarta 57126 Indonesia Research Collaboration Center for Biomass and Biorefinery between BRIN and Universitas Padjadjaran Jatinangor 45363 Indonesia Department of Chemical Engineering Faculty of Engineering Universitas Pembangunan Nasional “Veteran” Jawa Timur East Java Surabaya 60294 Indonesia

CO2 hydrogenation as sustainable route for generation of value-added carbon feedstock is identified as green pathway for mitigation of greenhouse gasses emission. CO2 methanation is one of the promising solutions, whi... 详细信息

CO₂ hydrogenation as sustainable route for generation of value-added carbon feedstock is identified as green pathway for mitigation of greenhouse gasses emission. CO₂ methanation is one of the promising solutions, which only requires reactions at atmospheric pressure while utilizing metal catalysts to overcome kinetic limitations. Metal catalysts can be promoted to alter reducibities, CO₂ adsorption capacities, and H_2[sbnd]CO₂ dissociation potential. The role of metal promoter such as rare earth elements (Ce, Mn, Co, and La) and alkali and alkali earth metal (Li, Na, Ca, and K) will be discussed within the scope of CO₂ methanation. The aspect of catalysts modification towards hydrogen dissociation potential and surface oxygen vacancy will be emphasized to enhance selectivity for methane. Another pathway for CO₂ hydrogenation is via further conversion into longer chain molecules such as olefin and ethanol. The benefit of metal promoter will be discussed in this review on the effect towards promoting C[sbnd]C coupling reaction for producing longer chain alcohol and light olefin. The strategies to develop active catalysts for the coupling reaction of C[sbnd]C will be emphasized with the promoter introduction. For the hydrogenation of CO₂ to longer chain molecules, the main metal catalysts Ni, Pd, Rh, and Co, and their modification with promoter such as Ga, Cu, and alkali metal Na, K will be discussed. A critical analysis of the CO₂ methanation mechanism and further C[sbnd]C reaction to longer chain molecules will be discussed, particularly the effect of metal promoters to stabilize the intermediate and maneuver the catalytic reaction pathway into the desired products. © 2023 The Author(s)

关键词： C1 products C2+ products CO2 Hydrogenation Metal promoter

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Development of wall follower hexapod robot 2

Development of wall follower hexapod robot

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2nd International Conference on Vocational Education and Technology, IConVET 2019

作者： Ariawan, K.U. Nurhayata, I.G. Sutaya, I.W. Electronics Engineering Study Program Indonesia Technical and Vocational Faculty Indonesia Universitas Pendidikan Ganesha Indonesia

This study aims to develop a six-legged robot that is able to walk in an arena that resembles a maze (maze wall) and is able to follow a wall (wall follower). This robot is competed in the Indonesian Robot Contest (KRI) in the Indonesian Fire Extinguisher Robot Contest (KRPAI) division which is held annually by the Directorate of Student Affairs, the Directorate General of Learning and Student Affairs, the Ministry of Research, Technology and Higher Education. The research design consisted of 4 stages, including: mechanical design, electronic design, joint movement design at the robot's foot, and software design. The final result of this research was a six-legged robot design (hexapod) with robot dimensions of 29 cm × 29 cm × 25 cm (length × width × height). From several tests, the robot's success rate in completing the mission was 100%, with an average time of 16.73 seconds and the fastest time to complete the mission reached 15.85 seconds. Thus, the robot is expected to be included in the Indonesian Robot Contest (KRI) in 2020. © 2020 IOP Publishing Ltd. All rights reserved.

关键词： Robots

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Power Transfer Analysis Using UPQC-PV System under Sag and Interruption with Variable Irradiance

Power Transfer Analysis Using UPQC-PV System under Sag and I...

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2020 International Conference on Smart Technology and Applications, ICoSTA 2020

作者： Amirullah Soeprijanto, Adi Adiananda Penangsang, Ontoseno Universitas Bhayangkara Surabaya Electrical Engineering Study Program Faculty of Engineering Surabaya Indonesia Institut Teknologi Sepuluh Nopember Department of Electrical Engineering Surabaya Indonesia

ISBN: (纸本)9781728130835

This paper presents an analysis of the Unified Power Quality Conditioner-Photovoltaic (UPQC-PV) system under sag and interruption voltage with variable irradiance. The PV is connected to a three-phase three-wire (3P3W) distribution system with 380 volts (L-L) and a frequency of 50 hertz, through UPQC-DC link. This system is used to maintain and supply sensitive loads. This paper shows that in the sag voltage and irradiance levels of 200 W/m2 to 1200 W/m2, the 3P3W system uses UPQC-PV with proportional-integral (PI) still able to maintain the active load power above 3714 W. However, in the interruption voltage and same irradiance level, the load active power drops to between 2560 W and 2805 W. This research also shows that in the sag voltage and same irradiance levels, the 3P3W system uses UPQC-PV with PI still able to generate PV power between 500 W to 920 W. In the interruption voltage and same irradiance levels, the power that can be generated by PV increases between 1300 W to 1635 W. Otherwise, at 250 C and 1000 W/m2, the increase in PV power on interruption voltage has not been able to meet the load active power consumption, so it finally drops to 2650 W. This paper is simulated using Matlab/Simulink. © 2020 IEEE.

关键词： Energy transfer

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The influence of preparation and pretreatment on the physicochemical properties and performance of plant-based biocoagulants in treating wastewater

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Environmental Advances 2023年 14卷

作者： Kurniawan, Setyo Budi Ahmad, Azmi Said, Nor Sakinah Mohd Gustinasari, Kiki Abdullah, Siti Rozaimah Sheikh Imron, Muhammad Fauzul Laboratory of Algal Biotechnology Centre Algatech Institute of Microbiology of the Czech Academy of Sciences Opatovický mlýn Novohradská 237 Třeboň 379 81 Czech Republic Department of Petrochemical Engineering Politeknik Tun Syed Nasir Syed Ismail Johor Pagoh 84600 Malaysia Department of Chemical and Process Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia (UKM) Selangor Bangi 43600 Malaysia Study Program of Environmental Engineering Department of Biosystem Engineering Faculty of Agricultural Engineering Universitas Brawijaya Malang 65145 Indonesia Study Program of Environmental Engineering Department of Biology Faculty of Science and Technology Universitas Airlangga Kampus C UNAIR Jalan Mulyorejo Surabaya 60115 Indonesia Department of Water Management Faculty of Civil Engineering and Geosciences Delft University of Technology Stevinweg 1 CN Delft 2628 Netherlands

Biocoagulants have gained attention as an alternative to chemical coagulants in water and wastewater treatment due to their ability to remove pollutant parameters such as turbidity, suspended solids, color, and organic compounds. Plant-based biocoagulants are currently the most promising due to their abundant availability and reliable performance. A proper preparation of plant-based biocoagulants is required to ensure the active compounds from the plants can be extracted. Plant raw materials are prepared into biocoagulants using drying and grinding, extraction, and purification. In mechanical preparation, drying and grinding exhibit great influence on the performance of plant-based biocoagulants due to the removal of moisture and higher contact with the carrier medium during dissolution. A smaller biocoagulant's size resulted in up to 78 % higher removal of turbidity. In chemical preparation, the oil needs to be removed before extracting the active ingredients to avoid low active compound extraction yields. The defatting of Moringa oleifera seeds showed an 18 % higher protein content. Salt and alcohol extractions were mentioned as superior extraction methods to obtain carbohydrate and protein from plant-based biocoagulants compared to water extraction, with up to a 5 % increment in turbidity removal. Preparation and pretreatment protocols have a great influence on the properties and performance of plant-based biocoagulants. Further extension of research on plant-based biocoagulants should address the problems in the initial characterization of plant material, standard pretreatment and preparation protocols, and real-scale application of plant-based biocoagulants. © 2023 The Author(s)

关键词： Biocoagulant Coagulant Environmental pollution Extraction Properties Synthesis

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Alternative foundation for reducing building losses due to foundation failure in soft soil 4

Alternative foundation for reducing building losses due to f...

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4th International Conference on Earthquake engineering and Disaster Mitigation, ICEEDM 2019

作者： Srihandayani, Susy Doctoral Program Departement of Civil Eng. Engineering Faculty Andalas University Indonesia Civil Engineering Study Program Sekolah Tinggi Teknologi Dumai Riau Indonesia

Much damage to buildings occurs in areas that have soft soil layers due to the failure of the foundations. Besides, foundations in soft soils generally require very expensive construction. For this reason, proper research needs to help develop strong foundations that can be used on soft soils with relatively low cost. In this research, foundations with various diameters and depths were tested on soft soil. The foundations were made of PVC pipes with diameters of ½ ", 1", 2 " or 2.5" and the same depth. Soft soil in the form of clay with particle-sizes that passed filter No. 200 was used. Before testing the foundations, carrying capacity analysis was done using the classical method on each pipe with a closed head so that the optimum carrying capacity of each foundation (PVC Pipe) was known. From this test the influence of the size of the foundations on the carrying capacity of soft soil could be seen. The results of this research will help reduce building loss/damage in areas dominated by soft topsoil © 2020 The Authors, published by EDP Sciences.

关键词： Foundations

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