SIMSEA: A Multiagent Architecture for Fishing Activity in a Simulated Environment

Virtual reality (VR) is quickly becoming the medium of choice for various architecture, engineering, and construction applications, such as design visualization, construction planning, and safety training. In particular, this technology offers an immersive experience to enhance the way architects review their design with team members. Traditionally, VR has used a desktop PC or workstation setup inside a room, yielding the risk of two users bump into each other while using multiuser VR (MUVR) applications. MUVR offers shared experiences that disrupt the conventional single-user VR setup, where multiple users can communicate and interact in the same virtual space, providing more realistic scenarios for architects in the design stage. However, this shared virtual environment introduces challenges regarding limited human locomotion and interactions, due to physical constraints of normal room spaces. This study thus presented a system framework that integrates MUVR applications into omnidirectional treadmills. The treadmills allow users an immersive walking experience in the simulated environment, without space constraints or hurt potentialities. A prototype was set up and tested in several scenarios by practitioners and students. The validated MUVR treadmill system aims to promote high-level immersion in architectural design review and collaboration.

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Characterization of Physical Parameters of an Agricultural Electric Vehicle based on the Dynamic Analysis in a Simulated Environment

2021 IEEE 15th International Conference on Semantic Computing (ICSC) ◽

10.1109/icsc50631.2021.00070 ◽

2021 ◽

Author(s):

Yan C. Alegre ◽

Tailon A. Podewils ◽

Elmer A. G. Penaloza ◽

Sigmar de Lima ◽

Luciano A. Leston

Keyword(s):

Dynamic Analysis ◽

Electric Vehicle ◽

Physical Parameters ◽

Simulated Environment

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The discourse of ESL advocacy in a simulated environment

Linguistics and Education ◽

10.1016/j.linged.2021.100928 ◽

2021 ◽

Vol 63 ◽

pp. 100928

Author(s):

Will Fox ◽

April S. Salerno

Keyword(s):

Simulated Environment

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Fishing activity sensing and visualization system using sensor-equipped fishing rod

Proceedings of the 18th Conference on Embedded Networked Sensor Systems ◽

10.1145/3384419.3430447 ◽

2020 ◽

Author(s):

Shuichi Fukuda ◽

Hyuckjin Choi ◽

Yuki Matsuda ◽

Keiichi Yasumoto

Keyword(s):

Fishing Activity ◽

Visualization System ◽

Activity Sensing

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Analytical Approach to Sampling Estimation of Underwater Tunnels Using Mechanical Profiling Sonars

Sensors ◽

10.3390/s21051900 ◽

2021 ◽

Vol 21 (5) ◽

pp. 1900

Author(s):

Vitor Augusto Machado Jorge ◽

Pedro Daniel de Cerqueira Gava ◽

Juan Ramon Belchior de França Silva ◽

Thais Mancilha ◽

Waldir Vieira ◽

...

Keyword(s):

Power Plant ◽

Power Plants ◽

Hydroelectric Power ◽

Large Power ◽

Unmanned Underwater Vehicles ◽

Power House ◽

Simulated Environment ◽

Sonar Sensor ◽

Power Plant Operation ◽

Plant Power

Hydroelectric power plants often make use of tunnels to redirect the flow of water to the plant power house. Such tunnels are often flooded and can span considerable distances. Periodical inspections of such tunnels are highly desirable since a tunnel collapse will be catastrophic, disrupting the power plant operation. In many cases, the use of Unmanned Underwater Vehicles (UUVs) equipped with mechanical profiling sonars is a suitable and affordable way to gather data to generate 3D mapping of flooded tunnels. In this paper, we study the resolution of 3D tunnel maps generated by one or more mechanical profiling sonars working in tandem, considering synchronization and occlusion problems. The article derives the analytical equations to estimate the sampling of the underwater tunnels using mechanical profiling sonars (scanning sonars). Experiments in a simulated environment using up to four sensors simultaneously are presented. We also report experimental results obtained by a UUV inside a large power plant tunnel, together with a first map of this environment using a single sonar sensor.

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Combined Effects of Temperature and Toxic Algal Abundance on Paralytic Shellfish Toxic Accumulation, Tissue Distribution and Elimination Dynamics in Mussels Mytilus coruscus

Toxins ◽

10.3390/toxins13060425 ◽

2021 ◽

Vol 13 (6) ◽

pp. 425

Author(s):

Yunyu Tang ◽

Haiyan Zhang ◽

Yu Wang ◽

Chengqi Fan ◽

Xiaosheng Shen

Keyword(s):

Tissue Distribution ◽

Combined Effects ◽

Mytilus Coruscus ◽

Paralytic Shellfish Toxins ◽

Rapid Elimination ◽

Simulated Environment ◽

Paralytic Shellfish ◽

Algal Abundance ◽

Effects Of Temperature ◽

The Impact

This study assessed the impact of increasing seawater surface temperature (SST) and toxic algal abundance (TAA) on the accumulation, tissue distribution and elimination dynamics of paralytic shellfish toxins (PSTs) in mussels. Mytilus coruscus were fed with the PSTs-producing dinoflagellate A. catenella under four simulated environment conditions. The maximum PSTs concentration was determined to be 3548 µg STX eq.kg−1, which was four times higher than the EU regulatory limit. The increasing SST caused a significant decline in PSTs levels in mussels with rapid elimination rates, whereas high TAA increased the PSTs concentration. As a result, the PSTs toxicity levels decreased under the combined condition. Additionally, toxin burdens were assessed within shellfish tissues, with the highest levels quantified in the hepatopancreas. It is noteworthy that the toxin burden shifted towards the mantle from gill, muscle and gonad at the 17th day. Moreover, variability of PSTs was measured, and was associated with changes in each environmental factor. Hence, this study primarily illustrates the combined effects of SST and TAA on PSTs toxicity, showing that increasing environmental temperature is of benefit to lower PSTs toxicity with rapid elimination rates.

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Sustainable Sources from Aquatic Organisms for Cosmeceuticals Ingredients

Cosmetics ◽

10.3390/cosmetics8020048 ◽

2021 ◽

Vol 8 (2) ◽

pp. 48

Author(s):

Carmen G. Sotelo ◽

María Blanco ◽

Patricia Ramos ◽

José A. Vázquez ◽

Ricardo I. Perez-Martin

Keyword(s):

Social Issues ◽

Good Condition ◽

Aquatic Organisms ◽

The Body ◽

Fishing Activity ◽

Marine Biomass ◽

Cosmetic Industry ◽

Wide Range ◽

Long Life ◽

By Products

Long life expectancy of populations in the developing world together with some cultural and social issues has driven the need to pay special attention to health and physical appearance. Cosmeceuticals are gaining interest in the cosmetic industry as their uses fulfills a double purpose: the requirements of a cosmetic (clean, perfume, protect, change the appearance of the external parts of the body or keeping them in good condition) with a particular bioactivity function. The cosmetics industry, producing both cosmetics and cosmeceuticals, is currently facing numerous challenges to satisfy different attitudes of consumers (vegetarianism, veganism, cultural or religious concerns, health or safety reasons, eco-friendly process, etc.). A currently growing trend in the market is the interest in products of low environmental impact. Marine origin ingredients are increasingly being incorporated into cosmeceutical preparations because they are able to address several consumer requirements and also due to the wide range of bioactivities they present (antioxidant, whitening, anti-aging, etc.). Many companies claim “Marine” as a distinctive marketing signal; however, only a few indicate whether they use sustainable ingredient sources. Sustainable marine ingredients might be obtained using wild marine biomass through a sustainable extractive fishing activity; by adopting valorization strategies including the use of fish discards and fish by-products; and by sustainably farming and culturing marine organisms.

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Leveraging a Genetic Algorithm for the Optimal Placement of Distributed Generation and the Need for Energy Management Strategies Using a Fuzzy Inference System

Electronics ◽

10.3390/electronics10020172 ◽

2021 ◽

Vol 10 (2) ◽

pp. 172

Author(s):

Sunny Katyara ◽

Muhammad Fawad Shaikh ◽

Shoaib Shaikh ◽

Zahid Hussain Khand ◽

Lukasz Staszewski ◽

...

Keyword(s):

Genetic Algorithm ◽

Energy Management ◽

Fuzzy Inference System ◽

Distribution System ◽

Fuzzy Inference ◽

Management Strategies ◽

Test System ◽

Optimal Placement ◽

Inference System ◽

Simulated Environment

With the rising load demand and power losses, the equipment in the utility network often operates close to its marginal limits, creating a dire need for the installation of new Distributed Generators (DGs). Their proper placement is one of the prerequisites for fully achieving the benefits; otherwise, this may result in the worsening of their performance. This could even lead to further deterioration if an effective Energy Management System (EMS) is not installed. Firstly, addressing these issues, this research exploits a Genetic Algorithm (GA) for the proper placement of new DGs in a distribution system. This approach is based on the system losses, voltage profiles, and phase angle jump variations. Secondly, the energy management models are designed using a fuzzy inference system. The models are then analyzed under heavy loading and fault conditions. This research is conducted on a six bus radial test system in a simulated environment together with a real-time Power Hardware-In-the-Loop (PHIL) setup. It is concluded that the optimal placement of a 3.33 MVA synchronous DG is near the load center, and the robustness of the proposed EMS is proven by mitigating the distinct contingencies within the approximately 2.5 cycles of the operating period.

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