Bacteria employ restriction enzymes to cut or restrict DNA at or near specific words in a unique way. Many restriction enzymes cut the two strands of double-stranded DNA at different positions leaving overhangs of single-st randed DNA. Two pieces of DNA may be rejoined or ligated if their terminal overhangs are complementary. Using these operations fragments of DNA, or oligonucleotides, may be ...

A distributed service-oriented architecture comprises interconnected machines that together support a number of services. Concurrent service requests made to an individual machine are supported with shared, and limited, resources associated with that machine. A call to a service method may in turn invoke methods from other services, resulting in a nesting of service calls that is represented by...

Steel plates are used in various structures, such as the structures of the deck and body of ships, bridges, and aerospace industry. In this study, we investigate the buckling and post-buckling behavior of rectangular steel plates having circular cutouts with two boundary conditions: first, clamped supports at upper and lower ends and free supports at other edges; second, clamped supports at upp...

Purpose We sought to determine whether big data from social media might reveal seasonal trends of conjunctivitis, most forms of which are nonreportable. Methods Social media posts (from Twitter, and from online forums and blogs) were classified by age and by conjunctivitis type (allergic or infectious) using Boolean and machine learning methods. Based on spline smoothing, we estimated the cir...

UML state machine is widely used in modeling the dynamic behavior of object-oriented designs in industry. But UML state machine specification, which is maintained by Object Management Group(OMG), is documented in natural language instead of formal language. The inherited ambiguity of natural language may introduce inconsistencies to the resulting state machine model. Formalizing UML state machi...

We describe the use and implementation of a polyshift function PSHIFT for circular shifts and end{oo shifts. Polyshift is useful in many scientiic codes using regular grids, such as nite diierence codes in several dimensions, multigrid codes, molecular dynamics computations, and in lattice gauge physics computations , such as Quantum Chromodynamics (QCD) calculations. Our implementation of the ...

Ai = Prismatic joints along the horizontal circular guide Bi = Spherical joints on the moving platform Ci = Prismatic joints on the vertical columns (i = 1,2,3) {F} = Fixed global reference frame {M} = Moving frame α, β, γ = ZYX Euler angles of rotation about the three joint axes of rider. α', β', γ', δ' = ZYXZ’ Euler angles of rotation about the four joint axes of chair on the moving platform ...

A machine assembly consisting of 17 identical molecules of 2,3,5,6-tetramethyl-1-4-benzoquinone (DRQ) executes 16 instructions at a time. A single DRQ is positioned at the center of a circular ring formed by 16 other DRQs, controlling their operation in parallel through hydrogen-bond channels. Each molecule is a logic machine and generates four instructions by rotating its alkyl groups. A singl...

Application of a recursive subspace identification method to derive a state space model for a synchronous machine is described in this paper. Simulation studies show the effectiveness of such an algorithm to identify on-line a synchronous machine model over a wide range of operating conditions and disturbances. The model provides a foundation for further study on a MIMO adaptive power system st...