E-commerce is growing rapidly and sales of digital goods represent a substantial portion of all online sales. Several goods such as music and books are now available in a physical and digital format. In a single-period case we compare pricing of digital vs. physical goods and derive an optimal pricing strategy for digital goods in both a general setting without a capacity constraint and a capac...

Amajor effort to establish “scientifically-based research” (SBR) in education has been under way for some time (Feuer, Towne, & Shavelson, 2002). Key manifestations of this effort are found in the No Child Left Behind Act and the reauthorization and reorganization of the Office of Educational Research and Improvement as the Institute for Educational Science (Eisenhart & Towne, 2003). The most d...

In fault-tolerant components reaIized using replication, severai alternate results are produce d, from which a single correct result must be derived. This is done by a mechanism, that we call an adjudicator Ca concept more generaI than a voter), which uses as its inputs the individuaI results produced by the replicated subcomponents comprising the redundant component. This paper gives a rigouro...

According to a well-known result by W. Hildenbrand [6], if all consumers possess the same demand function and the density of the expenditure distribution is decreasing, than the average income effect term is non-negative even if inferior goods are present, so that the aggregate demand must be monotone. We show that if the expenditure density is uni-modal and a certain relation between the incom...

Department of Marine and Coastal Science, Rutgers University, New Brunswick, NJ, United States, 2 Institute of Marine Science, National Research Council of Italy, Ancona, Italy, 3 Program in Interdisciplinary Studies, Institute for Advanced Studies, Princeton, NJ, United States, 4 Earth-Life Science Institute, Tokyo Institute of Technology, Tokyo, Japan, City College of New York, New York, NY, ...

Alberto Lupidi 1,*, Daniele Staglianò 1,2, Marco Martorella 1,2 and Fabrizio Berizzi 1,2 1 Consorzio Nazionale Interuniversitario delle Telecomunicazioni (CNIT)-National Laboratory of Radar and Surveillance Systems (RaSS), 56124 Pisa, Italy; [email protected] (D.S.); [email protected] (M.M.); [email protected] (F.B.) 2 Department of Information Engineering, ...

The early 2020s commonplace that everything seems unreal is a material truth. Advances in logistics are generating more counterfeits. Blockchain technology promises to help stem the deluge of counterfeit products, but dream also reminds us an imperfect performative art. good becomes figure, while airy speculation assumes greater predictability. All solid melts into air, all air comes back ground.