Given a set of n points with positive real weights in d-dimensional space, we consider an approximation to the problem of placing a unit ball, in order to maximize the sum of the weights of the points enclosed by the ball. Given an approximation parameter ε < 1, we present an O(n/εd−1) expected time algorithm that determines a ball of radius 1+ ε enclosing a weight at least as large as the weig...

The building atrium is a large space formed by integrating various functions. It runs through multiple floors and directly or indirectly connected with each floor. In the atrium, people can not only enjoy air quality of interior but also create an open natural environment characteristic outdoor space. this paper, winding corridor research object, using CFD simulation software to establish mathe...

Bloch oscillations (i.e., coherent acceleration of matter waves by an optical lattice) and Bragg diffraction are integrated into light-pulse atom interferometers with large momentum splitting between the interferometer arms, and hence enhanced sensitivity. Simultaneous acceleration of both arms in the same internal states suppresses systematic effects, and simultaneously running a pair of inter...

We calculate the electronic structure in quasiperiodic double-moir\'e systems of graphene sandwiched by hexagonal boron nitride, and identify topological invariants energy gaps. find that spectrum contains a number minigaps, they exhibit recursive fractal similar to Hofstadter butterfly when plotted against twist angle. Each gaps can be characterized set integers, which are associated with an a...

The optimization of active noise control based on a finite element model for acoustic field is considered. Fixed number of actuators are located on the boundary of a three-dimensional enclosed acoustic space which could be vehicle interior, for example. Actuator signals are used to minimize known harmonic noise at specified locations. Noise control system needs to be robust with respect to many...

We have combined a microfluidic network and developed a miniature glucose sensor to measure glucose consumption of single cardiomyocytes in a confined extracellular space. The thin film glucose sensor was integrated into a 360 picoliter extracellular space. We used Pt thin film electrodes (20x100 μm) as a counter electrode, and a needle type reference electrode (0.45 mm diam) placed in the cell...

This work introduces the space envelope, a shape model based upon a boundary description. Instead of modeling a single object (or solid), a space envelope encloses a volume of empty space. The advantage is that in any given view, there may be any number of objects, this number being di cult to determine from pixel-data alone. However, there is always one, and only one, volume of visible empty s...

There are subjective and objective acoustic parameters in the creation of performance for speech action room acoustics. Control reverberation time affecting is a main parameter In this study, assessment TOBB Twins Headquarters Reception Hall, which current enclosed space with square plan flat floor, has been performed as case study. The evaluation focused on relationship between interior surfac...