The potential to use the vertical jump (VJ) to assess both athletic performance and risk of anterior cruciate ligament (ACL) injury could have widespread clinical implications since VJ is broadly used in high school, university, and professional sport settings. Although drop jump (DJ) and VJ observationally exhibit similar lower extremity mechanics, the extent to which VJ can also be used as sc...

Scratching is a popular way of making music, turning the DJ into a musician. Normally scratching is done using a vinyl record, a turntable and a mixer. Vinyl manipulation is built up by a number of specialized techniques that have been analysed in a previous study. The present study has two main objectives. First is to better understand and model turntable scratching as performed by DJs. Second...

Disc Jokeys (DJs) generally mix music in a confined isolated space. This can make the DJ have depression sentiments and it can also difficult the DJ's understanding of his public. We present Enchantment Under The Sea: a new intelligent environment that allows the disc jokey to roam freely, interact directly with his audience, receive informative feedback about the public's social interactions, ...

This paper examines the spaces, politics, and cultural economies of electronic dance music (EDM). I use geographical literature on EDM to argue that its hedonistic spaces have been forged via cultural economic practices which I conceptualize as constitutive of a process of ‘accumulation by cooperation’. In numerous contexts, the people of EDM – the DJs, producers, MCs, artists, promoters, and r...

We analyze how VJs produce visuals to support DJs in dark and noisy club environments, enhancing the overall experience. We suggest that mobile technologies could improve the interaction between the audience and the VJ. As a first step to the generation of new applications, we tease out some characteristics of VJ production and live performance, which might influence the design of such technolo...

the concept of  -semihypergroups is a generalization of semigroups, a generalization of semihypergroups and a generalization of  -semigroups. in this paper, we study the concept of semiprime ideals in a  -semihypergroup and prove some results. also, we introduce the notion of  -hypergroups and closed  -subhypergroups. finally, we study the concept of  -semihypergroups associated to binary...

Payola—sometimes referred to as “pay-for-play”—is the undisclosed payment, or acceptance of in cash kind, for promotion a song, album, artist. Some form pay-for-play has existed music industry since 19th century. Most prominently, term been used refer practice record labels paying radio DJs play certain songs order boost their popularity and sales. Since middle 20th century, FCC regulated this ...

Abstract Introduction With our knowledge of adolescents’ sleep and circadian rhythms, it is striking that there minimal research on the environment health youth residing in juvenile justice facilities. Earlier findings from group (Woodard et al., 2022) suggest sleep-wake schedules nighttime light exposure increase youth’s likelihood for conditioned insomnia symptoms and/or dysregulation. The ai...

State machines are a type of mathematical modeling tool that is commonly used to investigate how system interacts with its surroundings. The thought be made up discrete states change in response external inputs. state whose environment two-element magma investigated this study, focusing on the case when group or hypergroup. It shown any can only have three states. In particular, quasi-automata ...