In order to minimize the invasiveness of intestinal disease diagnosis and surgery, we propose an anchoring and extending micro-robot. The gait of the micro-robot was designed according to the biomechanical features of the intestinal tract. The locomotion condition showed that the anchoring capability and extending ability should be balanced to enhance locomotion efficiency. The mechanical and c...

We present an extension of XDuce, a programming language dedicated to the processing of XML documents, with polymorphism and abstract types, two crucial features for programming in the large. We show that this extension makes it possible to deal with first class functions and eases the interoperability with other languages. A key mechanism of XDuce is its powerful pattern matching construction ...

a new species of cassiduloid echinoids, pygaulus baghinensis is reported for the first time from aptian sediments of baghin area, west of kerman, iran. the diagnostic features of the species are centrally positioned of the apical disc and approximately low profile of the test. variation in gonopore size in different individuals allows to conclude that p. baghinensis is sexually dimorphic. speci...

We investigate the electronic instabilities in carbon nanotubes of short radius, looking at the scaling behavior of the different correlations and charge stiffnesses at low energies. We show that the Luttinger liquid behavior breaks down in the undoped 3,3 nanotubes at low temperatures, due to the appearance of soft modes in the sector of current excitations. The phenomenology derived from this...

One of the key problems for more efficient use of conventionally PCBs is plated through holes, because they consume a large fraction of PCB surface area. One of the solutions that can permit to save the PCB surface is using of blind and buried vias. Currently, many expensive plating and sequential lamination steps create the blind/buried vias. Electrically conductive adhesives are the materials...

Domination and its variations in graphs are now well studied. However, the original domination number of a graph continues to attract attention. Many bounds have been proven and results obtained for special classes of graphs such as cubic graphs and products of graphs. On the other hand, the decision problem to determine the domination number of a graph remains NP-hard even when restricted to c...

By means of ab initio simulations, we investigate the phonon band structure and electron-phonon coupling in small 4-A diameter nanotubes. We show that both the C(5,0) and C(3,3) tubes undergo above room temperature a Peierls transition mediated by an acoustical long wavelength and an optical q=2k(F) phonon, respectively. In the armchair geometry, we verify that the electron-phonon coupling para...