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Why QoS Will Be Needed in Metro Ethernets

Emerging Metro Ethernets create new opportunities to converge data and telephony services. However, to connect legacy telephony equipment, networks have to meet customary QoS requirements even at the presence of bursty data cross traffic. We show with analytical evaluation and simulation results that without appropriate mechanisms the QoS requirements cannot be met. Thus, mechanisms for prioriz...

Don't Jump on Hype or You Will be Dumped! Using User-Generated Content to Support Financial Market Surveillance

In this paper, an IT artifact instantiation to support decision making in the field of financial market surveillance, is presented. This artifact utilizes a qualitative multi-attribute decision model to identify situations in which prices of single stocks are affected by fraudsters who aggressively advertise the stock. A quantitative evaluation of the implemented system prototype, based on volu...

Managing the new primary care: the new skills that will be needed.

Developing new models of primary care will demand a level of managerial expertise that few of today's primary care physicians possess. Yet medical schools continue to focus on the basic sciences, to the exclusion of such managerial topics as running effective teams. The approach to executing reform appears to assume that practice managers and entrepreneurs can undertake the managerial work of t...

Checking Identities Is Computationally Intractable (NP-Hard), So Human Provers Will Be Always Needed

In order to find a general framework for different combinatorial identities and identities that involve special functions, Bernshtein introduced in [1] a notion of holonomic functions. Let us recall this definition (in formulating it, we will follow [10]). A discrete holonomic function f(n) of one variable is defined as a solution of a homogeneous, linear difference equation with polynomial coe...