What Motives Users to Participate in Danmu on Live Streaming Platforms? The Impact of Technical Environment and Effectance

Danmu function as an augmented comment feature has been adopted by almost all live streaming platforms to foster interaction between viewers and the streamer in China. However, few studies have been conducted to understand the determinants of users’ Danmu sending behavior on live streaming platforms. This study examines this phenomenon from the lens of effectance theory and the S-O-R framework. We propose that two effectances – Danmu effectance and live streaming effectance – play an essential role in active Danmu participation. In addition, we explore the effects of time-enhanced (synchronicity) and space-enhanced technical characteristic (visibility) of Danmu on live streaming platforms on two effectances. Data analysis of 877 participations from Douyu platform in mainland China indicates that active Danmu participation is positively associated with Danmu effectance and live streaming effectance which are influenced by both time-enhanced technical feature (synchronicity) and space-enhanced technical feature (visibility). In addition, the study finds that demographic characteristics, namely education and income, also affect active Danmu participation.

Vehicle Speed Determination in Case of Road Accident by Software Method and Comparing of Results with the Mathematical Model

The paper addresses the problem to vehicle speed calculation at road accidents. To determine the speed are used the PC Crash software and Virtual Crash. With both methods are analysed concrete cases of road accidents. Calculation methods and comparing results are present for analyse. These methods consider several factors such are: the front part of the vehicle, the technical feature of the vehicle, car angle, remote relocation after the crash, road conditions etc. Expected results with PC Crash software and Virtual Crash are shown in tabular graphics and compared in mathematical methods.

Web Communications Commodity Chains

This chapter examines the workings of extended, Web-oriented communications commodity chains. It begins with a discussion of networks and access devices—an expansive, malleable infrastructure comprised of service, software, and applications powered by other intermediaries, vendors of everything from operating systems, browsers, search engines, and social networks to program content. It then considers how recomposition continued at a frenzied pace across this great range throughout the digital depression, signifying capital's scramble to open and to occupy high-profit boxes. It also explores the ways in which network infrastructures impacted a century-old manufacturing base and describes the apparently neutral technical feature of the emerging system's network engineering that attested to the changes that characterized the transition to the Internet. The chapter concludes with an assessment of the erosion of social responsibility around networks and how telecommunications liberalization induced a growing potential for market turmoil.

AR Technology and its Application in Biomedical Engineering

With the development of ubiquitous computing, augmented reality (AR ) technology has become an important research direction. For its Unique properties, it can be used in many engineering areas, especially in biomedical engineering. In this article, we mainly summarized the technical feature and technological superiority of the AR technology, and gave some applications and effectiveness of AR-based biomedical Engineering. This will be helpful for those who are eager to use this brand new technology in medicine.