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1st World Conference on Advanced Materials for Defense, AUXDEFENSE 2018

作者： Steffens, Fernanda Gralha, Sharon Erckmann Ferreira, Iêda Letícia S. Oliveira, Fernando R. Engineering Department Federal University of Santa Catarina Blumenau SC Brazil Postgraduate Program of Textile Engineering Federal University of Rio Grande do Norte RN Brazil

ISBN: (纸本)9783035713664

Textiles for military clothing face a complex set of challenges. They must provide protection, durability and comfort in a wide range of hostile environments. The general requirements of military textiles include damage resistance, comfort, sweat management, cold-weather conditions and the integration of high-tech materials into uniforms. This paper discusses the main concepts regarding the application of textiles in military uses, where the surrounding environments such as desert, jungle or extremely cold areas as well as the nature of the situations involved pose a threat to the soldier's safety. Therefore, the improvement and development of fibrous materials, textile structures and finishing processes can bring new perspectives for saving lives. © 2019 Trans Tech Publications Ltd, Switzerland.

关键词： Textiles

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Reducing VNS stimulation parameters: Is it safe?

Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurger...

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Arquivos Brasileiros de Neurocirurgia: Brazilian Neurosurgery 2022年第1期41卷 e19-e25页

作者： Tatiana Von Hertwig Fernandes de Oliveira Jennyfer Paulla Galdino Chaves Thiago Teixeira Silva Alexandre Novicki Francisco Sérgio Leandro Stebel Department of Neurosurgery Cajuru University Hospital Curitiba PR Brasil Postgraduate Program in Biomedical Engineering Federal University of Technology Curitiba PR Brasil

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Investigation of the immersion resistance of the HRS-WC mixtures with applying static loading

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Journal of Physics: Conference Series 2021年第1期1858卷

作者： S Sunarjono N Hidayati A Magfirona AD Prakoso Civil Engineering Postgraduate Program Universitas Muhammadiyah Surakarta Indonesia Civil Engineering Study Program Universitas Muhammadiyah Surakarta Indonesia

The inclusion of rainwater often compounds the damage to the road before reaching the plan life through the surface and shoulders of roads. This can lead to the release of aggregates and exfoliation of asphalt on the surface layer. The study aims to determine the level of road durability against the Marshall, volumetric, and durability properties of the HRS-WC mixture. The study used various static loading 100 Kpa, 150 Kpa, and 200 Kpa with immersion. In the immersion method, there are two differences, namely, immersion with and immersion without loading. The test objects' loading using a simple and economical test tool utilizes the beams and iron cylinders obtained from the laboratory, testing using Marshall Test. The results of the analysis obtained the durability of unloading soaked value higher than the load. The analysis results showed that the durability of the mixture was soaked seven days with a load of 100 KPa was 77.40%, for 150 Kpa amounted to 52.02%, and for 200 KPa, which is 47.67%. Analysis results showed a 7-day immersion value with a cumulative load of 68.38%, while analysis results showed a seven day immersion value with periodic loading of 75.43%.

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Hybrid electric vehicles: A review of performance in various temperature conditions

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AIP Conference Proceedings 2023年第1期2671卷

作者： Basirun Basirun Herminarto Sofyan Zainal Arifin Farid Mutohhari Rabiman Rabiman 1Postgraduate Program of Technology and Vocational Education Universitas Negeri Yogyakarta Indonesia 2Department of Automotive Engineering Education Universitas Negeri Yogyakarta Indonesia 3Department of Mechanical Engineering Education Universitas Sarjanawiyata Tamansiswa Indonesia

Air pollution and scarcity of fuel oil are the result of the high consumption rate of conventional motorized vehicles. Innovation of science and technology is needed in overcoming this pollution. Transitioning the use of vehicles, especially conventional oil-fueled cars to hybrid electric cars, is a innovation to overcome this. An important aspect of hybrid engine performance is related to changes in temperature variations that occur. Writing the article aims to examine the performance of hybrid cars in various temperature variations. Temperature varieties influence the current, voltage, and SOC of the battery which influences the motor progress (on/off). The impact of temperature is dissected to restrict the working scope of the vehicle to accomplish eco-friendly execution alongside longer battery life. The mistake between the normal and determined SOC esteems is tiny and accordingly gives the genuine mileage esteem. At lower temperatures, the mileage is lower and at higher temperatures it is high contrasted with the room temperature esteems, along these lines checking the hypothesis of the impact of temperature on the response pace of the battery cells.

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Study of retention and infiltration wells as a result of resettlement of the Batang Kuranji upper watershed

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IOP Conference Series: Materials Science and engineering 2021年第1期1041卷

作者： T Ophiyandri B Istijono A Gromiko B Hidayat Junaidi Nulrajabmil Civil Engineering Department Universitas Andalas Magister Program Postgraduate Civil Engineering Universitas Andalas

Padang City is one of the metropolitan cities in West Sumatra Province and has six (6) watersheds, one of which is the Batang Kuranji watershed. Over the last few years Batang Kuranji watershed has experienced significant infrastructure and urban development which began with the massive earthquake of 30 September, 2009 with coastal communities, afraid of being affected by larger aftershocks having the potential of a tsunami, moving to the upper watershed. As a result, the type of land cover that was originally an infiltration area has been changing into a runoff area. The Batang Kuranji channel with a discharge (Q25) 870 m3/s may not be able to accommodate the change in discharge which can lead to flooding. This paper aims to determine changes in discharge that occur due to changes in land cover and to analyse whether the use infiltration wells and retention pond can reduce the flooding volume. Two methods to calculate runoff discharge were adopted, HEC-HMS 4.1 Modelling and Nakayasu. It was found that the peak discharged increases to (Q25) 1,037.60 m3/s. Thus, creating retention pond with a dimension of 35 hectare with a depth of 5 m and 34,246 infiltration wells can reduce the flood risk. The percentage of runoff discharge they can accommodate is 90.98% and 9.02% respectively.

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REPEAT ANALYSIS program AS A QUALITY ASSURANCE SYSTEM FOR RADIOLOGY MANAGEMENT: CAUSAL REPEAT AND AN OVERVIEW

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Journal of Medical Imaging and Radiation Sciences 2023年第3期54卷 S31-S31页

作者： Rochmayanti, Dwi Adi, Kusworo Widodo, Catur Edi Doctoral Program of Information System School of Postgraduate Diponegoro University Department of Radiodiagnostic and Radiotherapy Engineering Health Polytechnic Ministry of Health Semarang Central Java Department of Physics Faculty of Science and Mathematics Diponegoro University

OBJECTIVEThis paper aims to describe the image retakes program over several decades, and identify the causes of issues due to rejection rates. MATERIALS & METHODSThis study is a literature review using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) method. Articles were searched from Google Scholar (3140) and Scopus (18) using keywords " Reject" or " Repeat" or " Retakes" and " Analysis" and " in" and " Diagnostic" and " Imaging". The article range was expanded to describe the profile of repeat analysis from the use of film-screen to digital transformation systems. Based on the established criteria, 20 articles were extracted and analyzed. RESULTSFrom the literature, it was found that repeat rates above 5% were still found in some examination categories, with chest radiography contributing the highest rejection rate, reaching 51.67%, with the biggest contributing factor being positioning (84.8%). There are interesting findings related to this program, where subjective factors in determining the classification of rejection causes still exist. One study mentioned that AI can predict image rejection accuracy with a sensitivity of 93%. Therefore, the use of AI can be very helpful in classifying rejection causes, making data available for more efficient and easier radiology management. CONCLUSIONRepeat program is part of image quality management. The justification for rejection decisions still poses a challenge related to personnel's subjective factors and determining the causes of rejection/repeat must also be done to obtain concrete data related to radiography performance.

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Evaluation of the characteristics of recycled aggregates produced in campinas-SP/Brazil

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International Journal of Sustainable Development and Planning 2020年第4期15卷 451-459页

作者： Martins, Valter Pimentel, Lia Lorena Postgraduate Program in Science and Environmental Engineering Federal University of Alfenas 39 João de Moraes Sobrinho Itapira SP13976-153 Brazil Postgraduate Program in Urban Infraestrutura Systems Pontifical Catholic University of Campinas 1516 Professor Dr. Euryclides de Jesus Zerbini Campinas SP13087-571 Brazil

To use the aggregate generated by recycling plants in the production of concrete, it is essential to know its characteristics. This paper aims to evaluate samples of recycled aggregates, both small and large, produced at two recycling plants located in the city of Campinas, SP, Brazil, comparing the results with parameters established by NBR 15116:2004 and with the characteristics of the natural aggregates used in the production of concrete. For the development of the study, samples of aggregates, small and large, both natural and recycled were collected, which had their characteristics determined and evaluated according to the specifications of NBRs 7211:2009 and 15116:2004. The results indicate that even the recycled aggregates showing some variability throughout the tests and unfulfilled with some normative specifications, it is concluded that their use in concrete is close to becoming feasible. It was verified that simple corrections in the recycling plants or additions of a certain amount of natural aggregate, would probably already be enough for the total standardization of the recycled aggregate. Comparing the recycled aggregates with the natural ones it was verified that the recycled ones present a higher index of fines and mainly greater absorption of water, which reflects in smaller values of specific mass, apparent specific mass and crushing resistance. However, these are not limiting factors in the use of recycled materials in concretes without structural function, since they will not be so mechanically required. © 2020 WITPress. All rights reserved.

关键词： Specifications

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Supporting Delivery Allocation Decisions in a Beverage Company with Multicriteria Methods and an Optimization Model

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International Journal of Production Economics 2025年

作者： Laís Sant’anna Fonseca Diogo Lima Production Engineering Postgraduate Program Federal Fluminense University 156 Rua Passo da Pátria Niterói 24210-240 Rio de Janeiro Brazil Production Engineering Department Federal Fluminense University 156 Rua Passo da Pátria Niterói 24210-240 Rio de Janeiro Brazil

Bidding processes are common for transparency purposes in several areas, such as civil construction and energy exploration. Usually, public agencies are responsible for the projects and formal notices are launched for the competition of interested parties. Also, those processes may occur in the private sector, and the decision process involves multiple dimensions that may be conflicting. The present study presents a multicriteria model to support decisions involving the allocation of deliveries (pallets) in the bidding process of a beverage company, where a set of carriers compete for the distribution of beverages in routes. On each route, there is a specific set of competing carriers. In addition, a carrier can participate in the process of more than one route, however, the carrier's capacity must be respected, considering the combination of allocations received on the solution. The Best-Worst Method (BWM) is used to obtain weights for criteria that are later applied in the PROMETHEE II method. The net flows from PROMETHEE II are then used in an assignment model, which outputs the share allocated to each carrier in each route. The tests and models include several practical constraints, and the approach achieved consistent results that may be replicated to support decision-making and future processes.

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High frequency monitoring for impact assessment of temperature, oxygen and radiation in floating photovoltaic system

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Scientific Reports 2025年第1期15卷 1-14页

作者： Prandini, Matheus Kopp Bueno, Rafael de Carvalho Rigotti, Jucimara Andreza Bleninger, Tobias Mannich, Michael Novak, Luis Henrique Department of Environmental Engineering-DEA Federal University of Paraná-UFPR Curitiba 81531-990 Brazil Postgraduate Program in Water Resources and Environmental Engineering Federal University of Paraná-UFPR Curitiba 81531-990 Brazil Paraná State Water and Sanitation Company-SANEPAR Rua Engenheiros Rebouças 1376 Rebouças 80215-900 Brazil

Floating photovoltaic (FPV) systems are designed for free water surface installations to provide a feasible solution for places with no availability of land areas and to avoid land-use conflicts caused by conventional solar energy farms. However, lakes and reservoirs are essential for ecosystem services like water supply and biodiversity support. In this regard, there was a lack of long-term and high-frequency monitoring data of important parameters influenced by FPV installation such as photosynthetically active radiation (PAR) and dissolved oxygen (DO). Temperature, despite being more reported, there is no consensus on increase or decrease values below the FPV. In this study, we conduct a comprehensive field assessment to accurately quantify temperature variations (at the weather station, modules, between the modules and the water surface and within the water), DO, and PAR of a FPV installed in a water supply reservoir. High-frequency monitoring sensors indicated that despite the 94.7% of radiation reduction below the FPV compared to the lake reference station, slight differences in water temperature and dissolved oxygen were found between measurements in monthly and daily averages in a system that covers less than 1% of the reservoir water surface. In addition, a microclimate due to the module warming is created between the module and water surface with temperature 12% greater than the weather station measurements. The fluctuation throughout the different time frequencies showed that the processes of the reservoirs are influenced by the FPV according to complex interactions among meteorological conditions, FPV configuration, and site-specific factors. © The Author(s) 2025.

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Halving interval guaranteed for Dekker and Brent root finding methods

Examples and Counterexamples

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Examples and Counterexamples 2024年 7卷

作者： Steffen, Vilmar Pasqua, Carlos Catusso Della de Oliveira, Maiquiel Schmidt da Silva, Edson Antonio Academic Departments of Engineering (DAENG) Federal University of Technology - Parana (UTFPR) Rua Gelindo Joao Folador 2000 Parana Francisco Beltrao 85602-863 Brazil Chemical Engineering Corse Federal University of Technology - Parana (UTFPR) Rua Gelindo Joao Folador 2000 Parana Francisco Beltrao 85602-863 Brazil Academic Department of Physics Statistics and Mathematics (DAFEM) Federal University of Technology - Parana (UTFPR) Rua Gelindo Joao Folador 2000 Parana Francisco Beltrao 85602-863 Brazil Center for Engineering and Exact Sciences (CECE) State University of Paraná (Unioeste) Rua da Faculdade 645 Parana Toledo 85903-000 Brazil Postgraduate Program in Chemical Engineering State University of Paraná (Unioeste) Rua da Faculdade 645 Parana Toledo 85903-000 Brazil

Hybrid methods are widely used in many areas of applied mathematics. One of the simplest and most common problems in this field is root finding, for which various methods exist. Some of the most efficient approaches combine two or more techniques into hybrid methods. Among these are the Dekker and Brent methods, for which we propose a modification to ensure that the search interval is halved in each iteration. We apply this modification to two examples: a transcendental equation and a cubic equation of state. The results demonstrate that the proposed modifications guarantee at least interval halving and offer a slight improvement in the efficiency of the root-finding process. © 2024 The Author(s)

关键词： Brent method Dekker method Hybrid method Interval halving Root finding

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