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Book ChapterDOI
01 Jan 2009
11 Citations
The shape and size of the enclosure for a snake should be selected based on the snake's biology.
As a result, such neural control provides a powerful but simple way to self-tune adaptable behaviors in snake robots.
Proceedings ArticleDOI
Changlong Ye, Shugen Ma, Bin Li, Yuechao Wang 
28 Sep 2004
27 Citations
Also, the grouping alternation motion adds a new explanation to the sinus lifting locomotion of natural snake.
The low-dimensional representation of the recorded snake motion is able to reproduce the essential features of the recorded biological snake motion on a snake robot, leading to improved agility and maneuverability, confirming our hypothesis.

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What factors affect the predictability of Nordic curls in weightlifting?
5 answers
The predictability of Nordic curls in weightlifting is influenced by various factors. One key factor is the combination of video-based kinematic variables adjusted by intrinsic covariates, such as angular velocity, age, and height, to predict the relative eccentric force (RelF) during the exercise. Additionally, pre-activation exercises targeting specific hamstring muscles, like the semitendinosus, can significantly impact muscle activation during Nordic curls, potentially reducing the risk of hamstring injuries. Furthermore, a curl predicting method involving the calculation of liquid amounts discharged onto a medium can aid in predicting the curl state of the medium based on the position and amount of liquid discharged. These factors collectively contribute to enhancing the predictability and effectiveness of Nordic curls in weightlifting.
How does forward head posture contribute to hyperkyphosis and respiratory dysfunction?
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Forward head posture (FHP) is linked to hyperkyphosis and respiratory dysfunction. FHP, often associated with hyperkyphosis, is a concern due to its connection with increased mortality rates, especially in the elderly. Studies suggest that FHP can lead to a restrictive lung disorder by affecting respiratory biomechanics, reducing ribcage mobility, and modifying respiratory muscle attachments, potentially impacting spirometry values. While some research indicates no significant relationship between FHP and respiratory function indices or neck disability, exercises targeting FHP have shown improvements in craniovertebral angle, cranial rotation angle, pain, and neck disability, emphasizing the effectiveness of exercises in correcting postural parameters and reducing FHP-related issues. Therefore, addressing FHP through corrective exercises may help mitigate hyperkyphosis and improve respiratory function.
Is the remote assessment of speech reliable?
5 answers
Remote assessment of speech has shown promising reliability in various studies. Research has demonstrated that paralinguistic features extracted from speech can provide valuable information about an individual's health status, although factors like reverberation levels can impact the reliability of certain features. Additionally, studies focusing on orofacial kinematics have highlighted the high internal consistency and reliability of remotely gathered data, suggesting their potential as digital biomarkers for disease progression. Furthermore, investigations into the teleassessment of motor speech disorders have shown that while in-person recordings with high-quality equipment are considered the gold standard, online recordings via videoconferencing can still provide reliable data, especially for specific speech parameters. Overall, these findings support the reliability of remote speech assessments, emphasizing their potential for use in telehealth applications.
What is Dexterity in engineering?
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4 answers
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The range of Caretta caretta, also known as the Loggerhead Sea Turtle, encompasses various regions as depicted in range maps attributing sub-watershed polygons with information on the species' presence, origin, seasonal, and reproductive use. Mexico, particularly the state of Quintana Roo, has been actively involved in marine turtle protection and conservation efforts, with the Sea Turtle Protection Program of Akumal playing a significant role. Over a 24-year protection period, nesting ecology parameters were studied, showing a nesting peak in June, a nesting success rate of 75.2%, and a mean clutch size of 108.6 eggs. Additionally, studies on the impact of methylmercury (MeHg) exposure on Loggerhead Sea Turtles revealed insights into oxidative stress responses at the cellular level, highlighting the species' susceptibility to environmental contamination and the importance of monitoring such exposures for conservation efforts.
Is there a standardized methodology to video kinematic analysis of movement?
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A standardized methodology for video kinematic analysis of movement has been developed using various technologies and approaches. Video analysis, particularly with depth information cameras, along with artificial intelligence algorithms like computer vision and deep learning, offers a promising solution for objective motion assessment in patients with movement disorders. Markerless hand motion capture techniques, such as OpenPose, have been validated for accurate finger tracking using monocular cameras, showing good agreement with marker-based systems. Additionally, a standardized protocol for kinematic analysis of upper extremity movements, like the drinking task, has been established using a 5-camera motion capture system and automated analysis software, proving to be a valid assessment for individuals with upper extremity impairments. These methodologies provide reliable and objective ways to analyze movement kinematics through video technology.
Input/output inversion control techniques used in sway control for industrial cranes, where the payload is subject to non-linear oscillations?
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Input/output inversion control techniques are crucial for sway control in industrial cranes dealing with non-linear payload oscillations. Various methods have been proposed to address this challenge. One approach involves utilizing model predictive control (MPC) based on the crane system's differential flatness for real-time control, achieving high damping performance in reducing payload oscillations. Another technique focuses on motion planning for precise path and trajectory tracking in underactuated cranes, stabilizing internal dynamics to provide stable reference commands for platform translations. Additionally, a novel method based on iterative sway angle calculations and 'command smoothing' has been developed to reduce sway during slewing motions, effectively dampening load oscillations. Furthermore, an on-off damping controller for semi-active dampers has been proposed to enhance passive dampers by amplifying energy dissipation and reducing sway vibrations.
How does the technique of the catch and finish affect the overall efficiency and speed of rowing?
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The technique of the catch and finish in rowing significantly impacts overall efficiency and speed. Research indicates that variables like catch angle, force development, stroke power, and velocity play crucial roles in determining rowing performance. Improving catch slip efficiency, as judged by rowers, leads to faster strokes and better boat velocity, with a focus on achieving quicker positive acceleration. Biomechanical analysis using advanced measurement systems like the BioRow Tech system can help identify key technical indicators for enhancing rowing stroke quality, such as catch factor, rowing style factor, and finish factor, resulting in improved performance. Therefore, optimizing the catch and finish positions, along with factors like stroke rate and power output, is essential for enhancing rowing efficiency and speed.
Is mart city project costly to implement in general?
4 answers
Implementing Smart City projects can be costly due to various factors such as infrastructure development, technology integration, and data collection. The expense of Smart City projects is highlighted in different contexts. For instance, the research by Guna and Ariana discusses the impact of additional labor and overtime on project costs, indicating potential cost increases. Additionally, Ragab and Sabir emphasize the importance of anomaly detection in Smart City Infrastructures, which involves the use of advanced technologies like Deep Learning models, indicating the investment required for such systems. Moreover, Figliozzi and Bertini point out the challenges related to data accessibility and integration in Smart City planning, which can contribute to the overall costs of implementing Smart City initiatives. These insights collectively suggest that Smart City projects can indeed be costly to implement.
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5 answers
The roto-translation group is a mathematical concept that combines rotations and translations in the Euclidean plane, forming a 3-dimensional Lie group. It plays a crucial role in various fields such as robotics, deep learning, and medical image analysis. In robotics, the roto-translation group is utilized to define formations of planar rigid bodies in both body-fixed and earth-fixed frames. Deep learning models leverage the roto-translation group to achieve rotation and translation equivariance, enhancing performance without the need for data augmentation. This group's properties are harnessed to ensure that models can maintain formation, symmetry, and robustness in the face of transformations and deformations, making it a fundamental concept in various scientific disciplines.