We study investment incentives in proprietary and open platforms. We find that for a given a level of platform adoption, investment incentives are stronger in proprietary platforms. However, open platforms may receive larger investment because they benefit from user innovation and may lead to wider adoption, which raises the return to investment. Application prices do not affect equilibrium inv...

We describe and interpret bidding behavior in FCC Auction 73 for the C-block licenses. These licenses were initially offered subject to an open platform restriction, which was highly valued by firms such as Google. Google entered bids until its bids reached the Cblock reserve price, thereby ensuring that the open platform restriction would be applied to the licenses. Later in the auction, other...

Suppose m and t are integers such that 0 < t ≤ m. An (m, t) splitting system is a pair (X,B) where |X| = m, B is a set of bm2 c subsets of X, called blocks such that for every Y ⊆ X and |Y | = t, there exists a block B ∈ B such that |B ∩Y | = b t 2c or |(X \B)∩Y | = b t 2c. We will give some results on splitting systems for t = 2 or 4 which often depend on results from uniform separating system...

An evolutionary framework is presented for spatial information technologies in business. The framework has the three dimensions of extent spatial applications are customer-facing, the extent geography influences the business, and the extent of presence of spatially-enabled web integration platform versus traditional spatial platform. The evolution of the framework over time is towards more cust...

Public debates are a common platform for presenting and juxtaposing diverging views on important issues. In this work we propose a methodology for tracking how ideas flow between participants throughout a debate. We use this approach in a case study of Oxfordstyle debates—a competitive format where the winner is determined by audience votes—and show how the outcome of a debate depends on aspect...

We demonstrate Open CALL-SLT, a framework which allows non-experts to design, implement and deploy online speechenabled CALL courses. The demo accompanies two long papers [1, 2] also appearing at the SLaTE 2015 workshop, which describe the platform in detail.

introduction: the brain renin-angiotensin system (ras) has been reported having a pathological role in age-related impairment in learning and memory. therefore, angiotensin converting enzyme inhibitors (acei) are expected to have positive effects on memory. longtime treatment with captopril (an angiotensin converting enzyme inhibitor) significantly attenuates the age-related impairment in learn...

background: heat stress is one of the agents in the work environment that can create numerous problems for workers. the objective of this research is to study heat stress control in the foundry platform of a steel plant in tehran. methods: in this experimental study, controlling plans were demonstrated for the work conditions improvement in one of steel plant's foundry platforms. for controllin...