We present a theoretical study of heavy ion acceleration from ultrathin (20 nm) gold foil irradiated by high-intensity sub-picosecond lasers. Using two-dimensional particle-in-cell simulations, three laser systems are modeled that cover the range between femtosecond and picosecond pulses. By varying the laser pulse duration we observe a transition from radiation pressure acceleration (RPA) to t...

Multi-relational rule mining is important for knowledge discovery in relational databases as it allows for discovery of patterns involving multiple relational tables. Inductive logic programming (ILP) techniques have had considerable success on a variety of multi-relational rule mining tasks, however, most ILP systems do not scale to very large datasets. In this paper we present two extensions ...

ILP, in short, induces a hypothesis H that explains target relations from their positive and negative examples E with background knowledge B. QUINLAN's FOIL [1], known as one of the most successful ILP systems, requires a set of all examples T R belonging to relation R in B. FOIL starts with the left-hand side of the clause and specializes it keeping a training set T that starts from E to evalu...

FOIL is a learning system that constructs Horn clause programs from examples. This paper summarises the development of FOIL from 1989 up to early 1993 and evaluates its eeectiveness on a non-trivial sequence of learning tasks taken from a Prolog programming text. Although many of these tasks are handled reasonably well, the experiment highlights some weaknesses of the current implementation. Ar...

Electrochemical conversion of carbon dioxide to value added multi-carbon products is great importance and a promising approach mitigate greenhouse gases. In this work, we report the fabrication electrodes by depositing Cu over metallic foils Zn, which show high faradic efficiency for CO2 formic acid, acetate, methanol. The morphology, phase oxidation state were different on two while maintainin...

We present a method of embedding Monolithic Active Pixel Sensor (MAPS) into flexible printed circuit board (FPC) and its interconnection by means through-hole copper plating. The resulting assembly, baptised "MAPS foil", is flexible, light, protected, fully integrated detector module. By using widely available manufacturing techniques, the production these devices can be scaled easily in size v...

Two-dimensional numerical simulations based on an immersed boundary method are performed for the two-foil system with varying spacings, and a staggered arrangement spacing normalized by chord length [Formula: see text] is found to be most favorable energy harnessing efficiency enhancement of nearly 40% downstream foil. By scrutinizing mean flow characteristics instantaneous wake dynamics, it re...

In this paper we focus on the water flow around a vertical hydrofoil used to generate power in micro-hydropower-units, based on the flutter phenomenon, which leads to pitching and sway oscillations of the foil. 2D computations are performed in COMSOL Multiphysics, in unsteady turbulent flow, for one-way pitch motion of the foil, with pitch angle varying over 50 degrees. This assumption precedes...