In this paper, the design of a novel ultrasensitive MEMS resonant force sensor utilizing a mode localization effect is presented. This new type of resonant sensor is constituted of several weakly coupled resonators and by measuring the amplitude ratio of designated resonators, a significant improvement in sensitivity is observed, compared to conventional frequency shift measurements. Furthermor...

It is well known that programs using only the following constructs: {x+x+ 1, X+-.X I 1, if x =0 then goto I, goto 1, halt} compute all partial recursive functions [7]. In fact, Minsky showed that simple programs with three variables compute all partial recursive functions with one argument and, consequently, simple programs with three variables recognize all recursively enumerable sets. We ask ...

Spectra taken with the Space Telescope Imaging Spectrograph (STIS) allow accurate location and extraction of the nuclear spectrum of NGC 4151, with minimal contamination by extended line emission and circumnuclear starlight. Spectra since 1997 show that the P Cygni Balmer and He I absorption seen previously in low nuclear states, is present in higher states, with outflow velocity that changes w...

We present X-ray spectroscopic and morphological analyses using Chandra ACIS and ROSAT observations of the giant elliptical galaxy NGC 4472 in the Virgo cluster. We discuss previously unobserved X-ray structures within the extended galactic corona. In the inner 2 ′ of the galaxy, we find X-ray holes or cavities with radii of ∼2 kpc, corresponding to the position of radio lobes. These holes were...

Efficient DNA delivery into cells is the prerequisite of the genetic manipulation of organisms in molecular and cellular biology as well as, ultimately, in nonviral gene therapy. Current reagents, however, are relatively inefficient, and structure-activity relationships to guide their improvement are hard to come by. We now explore peptide dendrimers as a new type of transfection reagent and pr...

The object-oriented paradigm is increasingly used in the implementation and the use of web services. However, the mismatch between objects and document structures in the wire has a negative impact over interoperability, more particularly when subtyping is involved. In this paper, we discuss how to improve interoperability in this context by preserving the subsumption property associated to subt...

The efforts of addressing user experience (UX) in product development keeps growing, as demonstrated by the proliferation of workshops and conferences bringing together academics and practitioners, who aim at creating interactive software able to satisfy their users. Unfortunately, human-centred design and methods addressing usability and UX are always mentioned in research papers but yet very ...

We study the structure of the tenacious (existing for all values of masses of the matter fields) BPS domain walls interpolating between different chirally asymmetric vacua in supersymmetric QCD in the limit of large masses. We show that the wall consists in this case of three layers: two outer layers form a “coat” with the characteristic size ∼ Λ SYM and there is also the core with width ∼ m−1....

It is shown that the energy (ε) and momentum (k) dependences of the electron selfenergy function Σ(k, ε + i0) ≡ Σ(k, ε) are, ImΣ(k, ε) = −aε|ε − ξk| −γ(k) where a is some constant, ξk = ε(k)−μ, ε(k) being the band energy, and the critical exponent γ(k), which depends on the curvature of the Fermi surface at k, satisfies, 0 ≤ γ(k) ≤ 1. This leads to a new type of electron liquid, which is the Fe...

The process of developing and making music with Ferin Martino, a piano-playing software algorithm has opened up a number of inquiries surrounding modern performance and creativity. Although it is relatively simple program, it is capable of much unique, expressive output that maintains a consistent style. Instead of constructing musical passages note by note, its musical character arises from it...