Smart mobility and logistics (SML) is an emerging paradigm that aims to interconnect transportation networks, industries, and commercial services to provide better services to end-users. SML solutions are rapidly grow...
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Smart mobility and logistics (SML) is an emerging paradigm that aims to interconnect transportation networks, industries, and commercial services to provide better services to end-users. SML solutions are rapidly growing in popularity not only in industrial sectors but also at individual levels by means of ride-sharing solutions, micro-mobility solutions, electric vehicles, and intelligent autonomous systems like self-driving cars, trucks, drones, and legged robots, among others. Usually, these solutions utilize communications technologies such as 5G internet services, cloud services, the internet of things, intelligent solutions, sophisticated routing and scheduling algorithms, and security features. The SML sector is still in its early stages, and solutions need to be designed for challenges that are unique due to the diverse needs. Also, many places in the world are facing challenges such as disruption in the global and local supply chains, traffic congestion, the death toll due to poor traffic networks, low-performance routes, and degraded quality of service. This paper aims to help researchers address these challenges and find innovative solutions that can help achieve SML goals.
Due to current environmental concerns, renewable resources (RRs) have gained popularity as microgrid power generating infrastructure. However, unpredictable weather and loading circumstances have a negative impact on ...
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ISBN:
(数字)9798350372403
ISBN:
(纸本)9798350372410
Due to current environmental concerns, renewable resources (RRs) have gained popularity as microgrid power generating infrastructure. However, unpredictable weather and loading circumstances have a negative impact on generated power, which in turn affects the microgrid frequency. The current study proposes a control approach for reducing frequency excursions in an islanded microgrid (IMG) by designing a cascading controller where primary controller used is a proportional resonant (PR) controller, and the secondary controller is fractional order PR, thereby forming a cascaded control of CFO (PR)
2
that has been optimized using moth flame technique (MFT). An IMG consists of precise wind turbine (PWT), cohesive solar micro turbine (CSμT), including aggregated energy storage (ES). The practicality of the proposed controller (i.e. CFO(PR)
2
) is unearthed by comparing the dynamic characteristics of IMG system with other controllers like FOPR and PID controllers. Finally, the model is tested under different case studies, with variations in generation and load.
This paper addresses the problem of input-to-state stability (ISS) and stabilization of linear ordinary differential equations (ODEs) coupled with a system of homogeneous linear hyperbolic partial differential equatio...
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ISBN:
(数字)9798350316339
ISBN:
(纸本)9798350316346
This paper addresses the problem of input-to-state stability (ISS) and stabilization of linear ordinary differential equations (ODEs) coupled with a system of homogeneous linear hyperbolic partial differential equations (PDEs) through the boundaries. First, a Lyapunov result characterizing the ISS property for finite-dimensional systems is extended to deal with coupled ODE and PDE systems. The proposed ISS condition is then applied to derive stability and stabilization conditions in terms of linear matrix inequality constraints assuming magnitude bounded disturbances at the boundaries. Two convex optimization problems are also proposed in order to obtain either an optimized reachable set estimate or a boundary controller that minimizes the disturbance effects on the ${\mathcal{L}}_{2} \times \mathbb{R}$-norm of the system states. Numerical examples illustrate the potential of the proposed approach.
The COVID-19 pandemic has popularized telework using video chat tools. Although video chat tools allow people to communicate each other in remote locations, psychological distance is longer than face-to-face communica...
The COVID-19 pandemic has popularized telework using video chat tools. Although video chat tools allow people to communicate each other in remote locations, psychological distance is longer than face-to-face communication, which may lead to a lack of intimacy. Previous studies have shown that interfaces combining video chat, VR, and robots with handshakes can improve the sense of closeness. However, few studies have focused on the sense of closeness in interfaces combining VR and robots. In this study, we proposed a multimodal interface combining VR and a robotic arm and verified whether shaking hands with a remote partner in VR could shorten the psychological distance compared to video chat. The results showed that the psychological distance was predominantly shorter in VR communication than in video chat communication; however, a handshake using robotic arm did not shorten the psychological distance compared to a handshake without a robotic arm. These results indicate that spatial distance is shorter in VR than in video chat and that robotic arms must be made more human-like.
For optical coherence tomography (OCT) on photonic chips, we designed and validated optimized silicon nitride-based passive components for photonic integrated circuits. Centered at 850 nm, these components offer high ...
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The global agribusiness context faces at the same time challenges of feeding a growing global population that is used to safe and nutritious food, opportunities based on innovation, high technology and efficiency in t...
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This study explores the feasibility of using large language models (LLMs), specifically GPT-4o (ChatGPT), for automated grading of conceptual questions in an undergraduate Mechanical engineering course. We compared th...
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This work presents a novel slotted patch antenna design featuring high gain and wide bandwidth, based on the Fabry-Perot approach. Advanced techniques are incorporated to enhance both gain and bandwidth. The proposed ...
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ISBN:
(数字)9788831299107
ISBN:
(纸本)9798350366327
This work presents a novel slotted patch antenna design featuring high gain and wide bandwidth, based on the Fabry-Perot approach. Advanced techniques are incorporated to enhance both gain and bandwidth. The proposed design utilizes a partially reflective surface (PRS), an artificial magnetic conductor (AMC), and conical PEC walls to improve gain and radiation characteristics. The conical PEC walls enhance gain and directivity by minimizing back radiation and concentrating radiated power. Additionally, it prevents side radiation leakage by reflecting it back onto the PRS. The proposed antenna achieves a maximum realized gain of 13 dB, with a wide 3-dB gain bandwidth of 27%, ranging from 28.6 GHz to 37.6 GHz. Optimized for fifth-generation (5G) high-frequency bands, the design also achieves a −10-dB bandwidth from 27 to 39 GHz.
In this paper, we compare two measurement techniques to analyze the dynamic response of a MEMS resonator, made of a microcantilever beam, that is electrostatically actuated via a side electrode. The first method is ba...
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This paper analyzes the ability of microgrids to provide ancillary services, and in particular frequency response, to low inertia grids. Frequency response in power grids is highly dependent on the total available ine...
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