Zheng has proposed a seller-optimal auction for (asymmetric) independent-privatevalue environments where inter-bidder resale is possible. Zheng’s construction requires novel conditions—Resale Monotonicity, Transitivity, and Invariance—on the bidders’ value distribution profile. The only known examples of distribution profiles satisfying these conditions in environments with three or more bidder...

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Microsoft Point to Point Encryption (MPPE) is a means of representing PPP packets in an encrypted form. MPPE uses the RSA RC4 algorithm to provide data confidentiality. The length of the session key to be used for initializing encryption tables can be negotiated. MPPE currently supports 40-bit, 56-bit and 128-bit session keys. MPPE session keys are changed frequently; the exact frequency depend...

Zheng Xu1∗, Mário A. T. Figueiredo2, Xiaoming Yuan3, Christoph Studer 4, Tom Goldstein1 1Department of Computer Science, University of Maryland, College Park, MD 2Instituto de Telecomunicações, Instituto Superior Técnico, Universidade de Lisboa, Portugal 3Department of Mathematics, Hong Kong Baptist University, Kowloon Tong, Hong Kong 4Department of Electrical and Computer Engineering, Cornell ...

Thirty years ago Bourrely-Soffer-Wu (BSW) investigated an impact picture description of p−p and p̄−p elastic scattering with success. For this anniversary, a short review of the main features of this picture will be presented with its evolution over the years. The future experiments at the LHC collider will provide decisive tests for the impact picture at high energy. In the year 1978, BSW propo...

Isolation, purification and physicochemical properties of the antibiotic complex YA-56, a family of phleomycin-bleomycin group, are described. The antibiotic YA-56 complex was found to be composed mainly of two active components named YA-56X and Y. These components were clearly differentiated from the reported phleomycins and bleomycins by their physicochemical properties. However, by direct co...