To evolve structured programs we introduce H-PIPE, a hierarchical extension of Probabilistic Incremental Program Evolution (PIPE). Structure is induced by \hierarchi-cal instructions" (HIs) limited to top-level, structuring program parts. \Skip nodes" (SNs) allow for switching program parts on and oo. They facilitate synthesis of certain structured programs. In our experiments H-PIPE outperform...

The influence of the improvement finned tube radiator unit structure on fluid flow and heat transfer effect locomotive was studied. A saw-toothed fin with aluminum instead copper proposed to keep position size flat hot water pipe unchanged. CFD simulation analysis carried out by ICEPAK17.0, under conditions an ambient temperature 24.6 °C, atmospheric pressure 85,040 Pa air density ? = 0.94 kg/m...

an important issue in power generation and petrochemical industries is the monitoring of pipe wall thickness and corrosion/erosion rate. the pipes are usually subject to erosive and/or corrosive environments and any failure could be catastrophic. while periodic manual ultrasonic thickness measurement is the common practice in many industries, in certain cases, where higher accuracies are requir...

Pipe dreams represent permutations pictorially as a series of crossing pipes. Recent applications of pipe dreams include the calculation of Schubert polynomials, fillings of moon polyominoes, and in the combinatorics of antidiagonal simplicial complexes. These applications associate pipe dreams to words of elementary symmetric transpositions via a canonical mapping. However, this canonical mapp...

An extensive product range is mandatory to be a key player in the pipe insulation market. The polyurethane preinsulated pipe producers are responding to global opportunities by diversifying their activities into industrial, marine, oil and gas applications. Moreover, the requirements for traditional district heating preinsulated pipes including initial thermal conductivity and its ageing perfor...

The Electrochemical Pipe Scale Accelerator (EPSA) rapidly reduces lead (Pb) concentration in water by up to 99% electroplating an insoluble and non-conductive phosphate or aluminum oxide scale. Twenty-Two million Americans, 120 Europeans, 500,000 Canadian households are at risk of lead-contaminated water. Unfortunately, traditional scale passivation can take years form deteriorate under a chemi...

The adoption of Health IT has been argued to bring about improvements in adopting hospitals. However, examining a panel of hospitals for the adoption of IT, we find that close to 50% of hospitals that adopt a health IT system go on to stop using it during the duration of our panel.1 We find that smaller hospitals and hospitals that are located in areas that have low IT-Intensity are more likely...