On the low intensity bootstrap for triangular arrays of independent identically distributed random variables

In this work, we give a complete picture of the behavior of the low intensity bootstrap of linear statistics. Our setup is given by triangular arrays of independent identically distributed random variables and different normalizations related to the rates of bootstrap intensities. We show that the behavior of this low intensity bootstrap coincides with that of partial sums of a number of summands equal to the bootstrap resampling size. Agreement on the limit laws for different (small) bootstrap sizes is thus shown to be closely related to domains of attraction of α-stable laws. As a byproduct, we obtain local distributional properties of Lévy processes.     

Supporting affect regulation in children with multiple disabilities during psychotherapy: A multiple case design study of therapeutic attachment.

In a controlled multiple case design study, the development of a therapeutic relationship and its role in affect regulation were studied in 6 children with visual disabilities, severe intellectual disabilities, severe challenging behavior, and prolonged social deprivation. In the 1st phase, children had sessions with an experimental therapist stimulating therapeutic attachment, alternating with a control therapist providing positive personal attention only. In the 2nd phase, both therapists applied behavior therapy. Clients sought more proximity to the experimental therapist compared with the control therapist. Psychophysiological arousal (respiratory sinus arrhythmia and pre-ejection period) was lower when the experimental therapist applied behavior modification than when the control therapist did. Despite prolonged social deprivation, the attachment behavioral system appeared responsive to stimulation. The effects on affect regulation may explain the synergy between psychotherapy based on interpersonal and behavior modification approaches. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Salt Concentration Effects in Planar Light‐Emitting Electrochemical Cells

Incorporation of ions in the active layer of organic semiconductor devices may lead to attractive device properties like enhanced injection and improved carrier transport. In this paper, we investigate the effect of the salt concentration on the operation of light‐emitting electrochemical cells, using experiments and numerical calculations. The current density and light emission are shown to increase linearly with increasing ion concentration over a wide range of concentrations. The increasing current is accompanied by an ion redistribution, leading to a narrowing of the recombination zone. Hence, in absence of detrimental side reactions and doping‐related luminescence quenching, the ion concentration should be as high as possible.     

Electrodeionization 2: The migration of nickel ions absorbed in a flexible ion-exchange resin

The removal of nickel ions from a low cross-linked ion-exchange resin using an applied electrical potential gradient was studied. The potential gradient across a bed of ion-exchange particles, in which nickel ions were absorbed, was varied by two methods. One involved a change of cell voltage across beds of constant width, the other a change of bed width at constant cell voltage. In this way, various characteristics concerning the electrodialytic regeneration of a bed of ion-exchange particles in the nickel form were ascertained. The diffusion coefficient, current efficiency and migration rate of nickel in the bed are discussed. It is shown that the current efficiency for the removal of nickel is nearly one hundred percent when the bed is in the nickel form, and that the rate of regeneration is proportional to the cell voltage.     

3Gmap L-systems: an application to the modelling of wood

In this paper an extension of L-systems is proposed, based on three-dimensional (3D) generalized maps that allow an easier control of the internal structure of 3D objects. A first and original application of this extension is also proposed: wood modelling by growth simulation. Numerous other applications of our work are possible, in the area of computer graphics, as well as in botanical science.     

用监控开关模式占空比的方法诊断LED

工程师们一般通过监控HB LED（高亮度发光二极管）的正向电压VF来判断LED的好坏。正向电压的大幅变化可能表明一只或一串LED有品质退化,或完全损坏。对于多只串联的LED,其正向电压之和可以达到40V以上,如果电压不是以地为基准,则需要差动测量。除了大电压和差动测量的挑战以外,     

Multiphase flow with unequal granular temperatures

Multiphase kinetic theory has been generalized to include rotation of particles with unequal masses and diameters. Inelastic binary collisions of particles with normal and tangential restitution coefficients are considered. New expressions for number of binary collisions, viscosities and conductivities were developed. Collision integrals produced new expressions for energy dissipation involving tangential and normal restitution coefficients. Computed radial profiles of granular temperatures of 530 and 156 μm glass beads flowing in a two story riser matched the experimentally measured profiles of granular temperatures using a particle image velocity technique without rotation. The measured and the computed particle concentration profiles were nearly flat in the central portion of the riser without rotation. Computations show that rotation can alter these profiles. Sufficient particle spin can drive the particles to concentrate near the center of the tube.     

Forum A historical context for theories underpinning the production of the built environment

The quest for ‘theory’ in the Building Research & Information special issue ‘Developing Theories of the Built Environment’ (36(3) 2008) needs to be understood within a larger historical and political context. It would benefit from engaging with a rich vein of work on the production of the built environment over the last 30 years. Theory inherently develops in the political context in which it exists; if it fails to do so, it may be dangerous. This commentary traces the intellectual underpinning concerned with understanding the process of change in the built environment, particularly the result of changes in social relations and the social labour process. The production of the built environment is seen as encompassing all the social processes concerned with producing the built environment, built products, buildings and infrastructure, and out of natural resources, whilst consumption is applied to all the processes involved in consuming these, including the well-being of tenants. And between these are situated the processes of exchange, distribution, and circulation, involving complex webs of relations between developers, builders, and landlords and landowners. The challenge is not only to engage and learn from past work, but also to state explicitly what is currently driving the need for a theory (or set of theories).

La quête de la « théorie » dans ce numéro spécial de Building Research & Information consacré aux théories du développement du milieu bâti (volume 36(3), 2008) doit être comprise dans un contexte historique et politique plus large. Elle aurait intérêt à s'appuyer sur les nombreux travaux concernant la production du cadre bâti publiés au cours de ces 30 dernières années. La théorie se développe, de manière inhérente, dans le contexte politique dans lequel elle existe; dans le cas contraire, la situation pourrait devenir dangereuse. Cet article analyse le raisonnement intellectuel sous-jacent concernant la compréhension du processus de changement dans le milieu bâti, notamment les conséquences des changements dans les relations sociales et dans le processus social du travail. La production du cadre bâti est considérée comme englobant tous les processus sociaux liés à la production du cadre bâti, des produits de construction, des bâtiments et des infrastructures et aux ressources naturelles alors que la consommation s'applique à tous les processus qui entrent en jeu dans la consommation de ceux-ci, y compris le bien-être des occupants. Entre ces deux notions, on trouve les processus d'échange, de distribution et de circulation qui font intervenir des réseaux de relations entre promoteurs, constructeurs, bailleurs et propriétaires fonciers. La difficulté ne vient pas seulement du fait qu'il faut tirer profit des travaux et de l'expérience passés mais qu'il faut également expliquer ce qui motive aujourd'hui la nécessité d'une théorie (ou d'un ensemble de théories).

Mots clés: cadre bâti, cadres conceptuels, consommation, processus de travail, cadre politique, production, relations sociales