scholarly journals Video Frequency Current Media Technology and Its Applications in Colleges and Universities

2014 ◽  
Vol 1 (1) ◽  
pp. 15
Author(s):  
Cunping Liu
Keyword(s):  
Video Transmission ◽  
Colleges And Universities ◽  
Campus Network ◽  
Media Technology ◽  
Network Applications ◽  
Audio Data ◽  
Video And Audio ◽  
Streaming Technology ◽  
Video Frequency ◽  
Audio Video

<p>Dealing with video materials with current media has unparalleled advantages over tradition audio-video materials. The combination of technology with campus network has wide application in colleges and universities. Streaming media has a high transfer rate, data synchronization, high stability characteristics, is the best way to achieve network audio and video transmission. A large number of video and audio data transmission is the main campus network applications, video streaming technology is mainly used in colleges and universities.</p>

scholarly journals Secure Audio-Visual Data Exchange for Android In-Vehicle Ecosystems

2021 ◽  
Vol 11 (19) ◽  
pp. 9276
Author(s):  
Alfred Anistoroaei ◽  
Adriana Berdich ◽  
Patricia Iosif ◽  
Bogdan Groza
Keyword(s):  
Data Exchange ◽  
Key Exchange ◽  
Visual Data ◽  
Security Applications ◽  
Diffie Hellman ◽  
Audio Data ◽  
Diffie Hellman Key Exchange ◽  
Visual Domain ◽  
Audio Video ◽  
Acoustic Domain

Mobile device pairing inside vehicles is a ubiquitous task which requires easy to use and secure solutions. In this work we exploit the audio-video domain for pairing devices inside vehicles. In principle, we rely on the widely used elliptical curve version of the Diffie-Hellman key-exchange protocol and extract the session keys from the acoustic domain as well as from the visual domain by using the head unit display. The need for merging the audio-visual domains first stems from the fact that in-vehicle head units generally do not have a camera so they cannot use visual data from smartphones, however, they are equipped with microphones and can use them to collect audio data. Acoustic channels are less reliable as they are more prone to errors due to environmental noise. However, this noise can be also exploited in a positive way to extract secure seeds from the environment and audio channels are harder to intercept from the outside. On the other hand, visual channels are more reliable but can be more easily spotted by outsiders, so they are more vulnerable for security applications. Fortunately, mixing these two types of channels results in a solution that is both more reliable and secure for performing a key exchange.

scholarly journals Consistency and variability between cultures during toddlers’ naturalistic play

2019 ◽  
Author(s):  
Bria Long ◽  
Patrick Wong ◽  
Michael C. Frank ◽  
Eva Lai ◽  
Peggy Chan ◽  
...  
Keyword(s):  
Empirical Studies ◽  
Past Research ◽  
The United States ◽  
Free Play ◽  
Wide Range ◽  
Wide Variability ◽  
Play Behaviors ◽  
Audio Data ◽  
Video And Audio ◽  
Guided Play

Play is a universal behavior that is thought to be a critical way for children to learn a wide range of motor, social, and language skills. Empirical studies of play have borne out some of the predictions of classical theories, showing that children preferentially engage with surprising stimuli, will play in order to learn, and generally show a similar progression of increasingly-complex play behaviors through infancy. Past research has also characterized the types of support and guidance that parents offer during guided play with their child, as distinguished from individual free play. However, most of these studies come from Western nations, and relatively few cross-cultural comparisons have been made, despite observations of wide variability in cultural play traditions. The goal of this study is to examine the variability and consistency of play behaviors in a large sample of 1–2-year-old children—a critical period in the development of play behaviors—in two cultural contexts: the United States and Hong Kong. Our investigation covers both individual and guided play, with measures related to joint attention, stereotypical play behaviors, language use, and types of support offered by caregivers during guided play. This rich, annotated corpus of video and audio data also provides an important resource for research on early play.

scholarly journals A Deep Learning Enhanced Novel Software Tool for Laryngeal Dynamics Analysis

2021 ◽  
pp. 1-15
Author(s):  
Andreas M. Kist ◽  
Pablo Gómez ◽  
Denis Dubrovskiy ◽  
Patrick Schlegel ◽  
Melda Kunduk ◽  
...  
Keyword(s):  
Neural Networks ◽  
Quantitative Analysis ◽  
High Speed ◽  
Voice Disorders ◽  
Vocal Folds ◽  
Video Data ◽  
Audio Data ◽  
Fully Automatic ◽  
Video And Audio

Purpose High-speed videoendoscopy (HSV) is an emerging, but barely used, endoscopy technique in the clinic to assess and diagnose voice disorders because of the lack of dedicated software to analyze the data. HSV allows to quantify the vocal fold oscillations by segmenting the glottal area. This challenging task has been tackled by various studies; however, the proposed approaches are mostly limited and not suitable for daily clinical routine. Method We developed a user-friendly software in C# that allows the editing, motion correction, segmentation, and quantitative analysis of HSV data. We further provide pretrained deep neural networks for fully automatic glottis segmentation. Results We freely provide our software Glottis Analysis Tools (GAT). Using GAT, we provide a general threshold-based region growing platform that enables the user to analyze data from various sources, such as in vivo recordings, ex vivo recordings, and high-speed footage of artificial vocal folds. Additionally, especially for in vivo recordings, we provide three robust neural networks at various speed and quality settings to allow a fully automatic glottis segmentation needed for application by untrained personnel. GAT further evaluates video and audio data in parallel and is able to extract various features from the video data, among others the glottal area waveform, that is, the changing glottal area over time. In total, GAT provides 79 unique quantitative analysis parameters for video- and audio-based signals. Many of these parameters have already been shown to reflect voice disorders, highlighting the clinical importance and usefulness of the GAT software. Conclusion GAT is a unique tool to process HSV and audio data to determine quantitative, clinically relevant parameters for research, diagnosis, and treatment of laryngeal disorders. Supplemental Material https://doi.org/10.23641/asha.14575533

Security Protection and Solving Procedures of University Network

2014 ◽  
Vol 631-632 ◽  
pp. 958-961
Author(s):  
Jun Li ◽  
Teng He Ao
Keyword(s):  
Information Exchange ◽  
Research Work ◽  
The Internet ◽  
Security Threats ◽  
Network Technology ◽  
Campus Network ◽  
Life Study ◽  
Network Applications ◽  
Gradual Expansion ◽  
Security Network

The development of computer and network technology greatly make changes in current society and our life. It affects daily life, study, work as well as scientific research. Internet itself is open and unrestricted, which becomes a much complex running environment due to gradual expansion and feasibility of all kinds of network applications. Meanwhile, network confronts security threats coming from different paths. It is utmost important for the network designer and manager to protect and secure the running network. Campus network that connects to the internet performs information exchange and communication on teaching, research work and so on. It also consider as an indispensable facility of college. The securities of network often suffer threats because of its special utilizations. In order to establish and maintain an effective and high security network, the efficient procedures, methods and strategies seem to be very imperative in modern campus network.

Acoustic Study of Wave-Breaking to Enhance the Understanding of Wave Physics

2020 ◽  
Author(s):  
Michael Odzer ◽  
Kristina Francke
Keyword(s):  
Wave Breaking ◽  
Ocean Waves ◽  
Breaking Waves ◽  
Video Data ◽  
Wave Tank ◽  
Potential Applications ◽  
Audio Data ◽  
Video And Audio ◽  
Bubble Sizes ◽  
Laboratory Tank

Abstract The sound of waves breaking on shore, or against an obstruction or jetty, is an immediately recognizable sound pattern which could potentially be employed by a sensor system to identify obstructions. If frequency patterns produced by breaking waves can be reproduced and mapped in a laboratory setting, a foundational understanding of the physics behind this process could be established, which could then be employed in sensor development for navigation. This study explores whether wave-breaking frequencies correlate with the physics behind the collapsing of the wave, and whether frequencies of breaking waves recorded in a laboratory tank will follow the same pattern as frequencies produced by ocean waves breaking on a beach. An artificial “beach” was engineered to replicate breaking waves inside a laboratory wave tank. Video and audio recordings of waves breaking in the tank were obtained, and audio of ocean waves breaking on the shoreline was recorded. The audio data was analysed in frequency charts. The video data was evaluated to correlate bubble sizes to frequencies produced by the waves. The results supported the hypothesis that frequencies produced by breaking waves in the wave tank followed the same pattern as those produced by ocean waves. Analysis utilizing a solution to the Rayleigh-Plesset equation showed that the bubble sizes produced by breaking waves were inversely related to the pattern of frequencies. This pattern can be reproduced in a controlled laboratory environment and extrapolated for use in developing navigational sensors for potential applications in marine navigation such as for use with autonomous ocean vehicles.

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