original contribution to the psycho-pathology of childhood. Dr. Stein's evolutionary interpretation of speech abnormalities illuminates some of the dark places of therapeutic work. The fundamental concept of growth, though accepted and applied without question in the study of the motor, intellectual, social and linguistic behaviour of children, had not hitherto been applied exhaustively and rig...

The notion of stationary Apollonian packings in the d-dimensional Euclidean space is introduced as a mathematical formalization of so-called random Apollonian packings and rotational random Apollonian packings, which constitute popular grain packing models in physics. Apart from dealing with issues of existence and uniqueness in the entire Euclidean space, asymptotic results are provided for th...

We consider here the collection of all partitions of an n-set, for fixed n, and we ask: is it possible to arrange these partitions in a list (Gray Code) so that each partition is obtained from its immediate predecessor by changing the class of exactly one element? The answer is affirmative, and we give descriptions of two algorithms which implement the method, the first recursive, the second no...

Ice nuclei have been studied on the hexagonal boron nitride nanomesh (h-BN/Rh(111)), a template with 2 nm wide molecule traps. Scanning tunneling microscopy shows confined clusters, where oligomers with three protrusions are particularly abundant. Together with local barrier height dI/dz maps, it is found that the dipoles of the water molecules arrange in a homodrome, which is consistent with d...

We investigate the structure and phase behavior of a two-component (binary) polymer brush in a solvent within self-consistent field theory as a function of the chains' stretching, the composition, and the incompatibility. Grafting the chains irreversibly prevents macrophase separation and the chains assemble into three-dimensional structures with lateral periodicity. At small incompatibilities ...

Anaerobic methane oxidation in archaea is often presented to operate via a pathway of "reverse methanogenesis". However, if the cumulative reactions of a methanogen are run in reverse there is no apparent way to conserve energy. Recent findings suggest that chemiosmotic coupling enzymes known from their use in methylotrophic and acetoclastic methanogens-in addition to unique terminal reductases...

This paper describes the architecture of AgentSimJs, a web-based multi-agent simulator written in Javascript. The simulator is capable to render a 3D scene with objects and agents and allows the programmer to arrange simulations by specifying the behavior of agents. The architecture of AgentSimJs is highly modular, as several different components have been designed to enrich the simulator with ...

The problem of designing a modular manufacturing lines is addressed. The modules are multi-spindle units and each unit executes simultaneously a subset of operations. This paper presents an approach to select the right spindle units and to arrange them into linear workstations. Our objective is to design such lines respecting technological constraints by minimizing the investment cost, which ta...

In our previous work [1], we have demonstrated how to arrange physical lighting so that the acquired images of a human face can be directly used as the basis vectors of a lowdimensional linear space. The “universal configuration” computed in [1] has been shown to provide a good basis for face recognition under a wide range of lighting conditions. In this paper, we propose a more rigorous formul...

In this work we propose the intensive use of embedded memory blocks and logic blocks of the FPGA device for signature matching. In our approach we arrange signatures in memory arrays (MA) of embedded memory blocks, so that every signature is matched in one clock cycle. The matching logic is shared among all the signatures in one MA. In addition, we propose a character recodification method that...