Cameron has introduced a natural bijection between the set of one way infinite binary sequences and the set of sum-free sets (of positive integers), and observed that a sum-free set is ultimately periodic only if the corresponding binary sequence is ultimately periodic. He asked if the converse also holds. In this paper we present necessary and sufficient conditions for a sum-free set to be ult...

We introduce a bandwidth-unlimited, dispersion- and shear-self-calibrated, timing-jitter-free pulse measurement technique based on a quasi-linear temporal phase modulation in a gas weakly ionized by a long pump pulse. Results of a 5 fs pulse characterization are reported.

Cancers of unknown primary (CUP) constitute a significant diagnostic and therapeutic challenge for clinicians and a frequent cause of cancer-related mortality in Western countries. Immunohistochemistry assays are commonly used to identify the primary cancer, but fail in approximately one-third of cases. The identification of the possible origin of CUP is crucial, as it may help select the appro...

Richard Joyce, who believes that morality is globally mistaken in making normative claims on people that do not wholly derive from their own desires or institutional commitments (2001, 2006a), in his chapter defends ethics from more piecemeal undermining by neuroscience while suggesting that it will be undermined globally in other ways. My perspective is very different. I think that while some ...

O ver the past 25 years, thrombolytic therapy has consistently demonstrated improvement in hemodynamic parameters in patients with pulmonary embolism (PE). 1 Clinically, although it results in reduced mortality in patients with massive PE, 2 thrombolytic therapy is not beneficial in unselected patients with PE. 3 Major societal guidelines support systemic throm-bolysis for massive PE and recomm...

Today’s business world is fast-paced, and successful organizations must innovate, especially as technologies become ever more crucial to securing market success. Research in the fields of leadership and organization design illustrates that innovativeness is a competency advanced by particular kinds of leadership and through specific organization designs. Similarly, research displays how cultura...

The aim of this paper is to study the power of parallel multiset-rewriting systems with permitting or forbidding context (or P systems with non-cooperative rules with promoters or inhibitors). The main results obtained say that if we use promoters or inhibitors of weight two, then the systems are computational universal. Moreover, both constructions satisfy a special property we define: they ar...