Self-torque has recently been observed as a novel property of light that features time-varying orbital angular momentum (OAM) along a light pulse. This property offers an additional degree of freed…
Keyword searches with brand names occur very commonly on search engines, enabling firms to infer not only when consumers are searching for them but also when consumers are searching for their compe…
Crowdfunding aims to collect small investments from a large number of backers to support a project by fundraisers. Although uncertainty has been an important issue in the reward-based crowdfunding …